25 UA AI Diagnostic Cards
Performance Problems
[ Growth symptom ]
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
CPA jumped in the last few days
ChatGPT
Why did CPA increase?
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
01
[ Growth symptom ]
CPI increased but downstream quality improved
ChatGPT
Why did CPI get worse?
Check if higher CPI is actually a bad
enough to justify it. Compare cost, events, retention, and ROAS.
CPI, CPA, ROAS, retention, trial/ deposit/purchase rate
Do not optimize CPI alone if quality improved.
02
ROAS dropped after scaling
ChatGPT
Why did ROAS drop?
Compare pre-scale and post-scale
performance.
Identify whether the drop came from audience expansion, GEO shift, creative fatigue, bid pressure, or cohort lag.
Spend increase, ROAS by cohort, GEO, source, creative, frequency
Do not cut too fast if cohorts are still immature.
03
Installs increased but events dropped
ChatGPT
Why are users not converting?
Check whether the install growth came from lower-quality sources, new GEOs, different creatives, store mismatch, or tracking changes.
Install volume, event CVR, source mix, GEO mix, creative promise, event setup
Treat cheap volume as risky until downstream events prove quality.
04
CTR improved but CPA got worse
Claude + ChatGPT
Why is this ad not converting?
Check whether the install growth came from lower-quality sources, new GEOs, different creatives, store mismatch, or tracking changes.
CTR, CVR, CPA, store page message, onboarding, audience intent
Do not call a creative a winner only because CTR is high.
05
Volume suddenly dropped
ChatGPT
Why did volume drop?
Check whether the install growth came from lower-quality sources, new GEOs, different creatives, store mismatch, or tracking changes.
Spend, impressions, reach, frequency, bids, approvals, audience size
Check delivery and budget limits before changing creatives.
06
One GEO suddenly underperforms
ChatGPT
Why is this GEO bad?
Check whether the install growth came from lower-quality sources, new GEOs, different creatives, store mismatch, or tracking changes.
CPI, CPA, CVR, retention, language, creative angle, source mix
Do not kill a GEO before checking localization and sample size.
07
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
AI DIAGNOSTIC PLAYBOOK FOR UA TEAMS
25 mobile growth problems, 100+ checks, and AI prompts that help you find what actually changed
Most UA teams don’t need more AI prompts. They need a faster way to understand what actually changed. CPA jumped. ROAS dropped. A winning creative started fading. A cheap GEO brought users who never converted. This playbook gives you 25 UA diagnostic cards to separate real signals from noise — before you pause, scale, refresh, or report.
The UA AI Diagnostic Playbook
25 mobile growth problems, 100+ checks, and AI prompts that help you find what actually changed
Most UA teams don’t need more AI prompts. They need a faster way to understand what actually changed. CPA jumped. ROAS dropped. A winning creative started fading. A cheap GEO brought users who never converted. This playbook gives you 25 UA diagnostic cards to separate real signals from noise — before you pause, scale, refresh, or report.
25 mobile growth problems, 100+ checks, and AI prompts that help you find what actually changed
Most UA teams don’t need more AI prompts. They need a faster way to understand what actually changed. CPA jumped. ROAS dropped. A winning creative started fading. A cheap GEO brought users who never converted. This playbook gives you 25 UA diagnostic cards to separate real signals from noise — before you pause, scale, refresh, or report.
How to Use This Playbook
Find the growth symptom that matches your problem
Copy the “Better AI ask”
Paste your real campaign data, notes, and recent changes
Review the signals AI checks
Let AI support the diagnosis — but keep humans in charge of budget, partners, and final decisions
01
02
03
04
05
25 UA AI Diagnostic Cards
Performance Problems
[ Growth symptom ]
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
[ Decision rule ]
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
05
[ Growth symptom ]
CTR improved but CPA got worse
[ Best tool ]
Claude + ChatGPT
[ Weak AI ask ]
Why is this ad not converting?
[ Better AI ask ]
Signals to check
CTR, CVR, CPA, store page message, onboarding, audience intent
Decision rule
Do not call a creative a winner only because CTR is high.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
06
[ Growth symptom ]
Volume suddenly dropped
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Why did volume drop?
[ Better AI ask ]
Signals to check
Spend, impressions, reach, frequency, bids, approvals, audience size
Decision rule
Check delivery and budget limits before changing creatives.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
07
[ Growth symptom ]
One GEO suddenly underperforms
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Why is this GEO bad?
[ Better AI ask ]
Signals to check
CPI, CPA, CVR, retention, language, creative angle, source mix
Decision rule
Do not kill a GEO before checking localization and sample size.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
01
[ Growth symptom ]
CPA jumped in the last few days
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Why did CPA increase?
[ Better AI ask ]
Signals to check
CPI, CTR, CVR, target event rate, spend shift, GEO/source mix, recent changes
Decision rule
Do not pause until tracking, volume, and source/GEO shifts are checked.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
02
[ Growth symptom ]
CPI increased but downstream quality improved
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Why did CPI get worse?
[ Better AI ask ]
Signals to check
CPI, CPA, ROAS, retention, trial/deposit/purchase rate
Decision rule
Do not optimize CPI alone if quality improved.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
03
[ Growth symptom ]
ROAS dropped after scaling
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Why did ROAS drop?
[ Better AI ask ]
Signals to check
Spend increase, ROAS by cohort, GEO, source, creative, frequency
Decision rule
Do not cut too fast if cohorts are still immature.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
04
[ Growth symptom ]
Installs increased but events dropped
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Why are users not converting?
[ Better AI ask ]
Signals to check
Install volume, event CVR, source mix, GEO mix, creative promise, event setup
Decision rule
Treat cheap volume as risky until downstream events prove quality.
25 UA AI Diagnostic Cards
[ Growth symptom ]
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
[ Decision rule ]
Creative Problems
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
08
[ Growth symptom ]
A winning creative is fading
[ Best tool ]
ChatGPT + Claude
[ Weak AI ask ]
Is this creative tired?
[ Better AI ask ]
Signals to check
CTR trend, CPA trend, frequency, spend, audience, bid changes
Decision rule
Refresh before replacing if the core angle still works.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
09
[ Growth symptom ]
CTR is slowly declining
[ Best tool ]
Claude
[ Weak AI ask ]
How do we improve CTR?
[ Better AI ask ]
Signals to check
CTR by day, first 3 seconds, frequency, audience, format
Decision rule
Do not change the whole concept if only the hook is weak.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
10
[ Growth symptom ]
New creatives keep losing to old winners
[ Best tool ]
Claude
[ Weak AI ask ]
Why are new creatives bad?
[ Better AI ask ]
Signals to check
Hook, promise, proof, pacing, CTA, audience fit
Decision rule
New creatives should evolve the winning logic, not abandon it.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
11
[ Growth symptom ]
Hook works in one GEO but fails in another
[ Best tool ]
Claude
[ Weak AI ask ]
Localize this creative.
[ Better AI ask ]
Signals to check
GEO, language, cultural context, CTR, comments, store CVR
Decision rule
Do not localize words only; localize the reason to care.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
12
[ Growth symptom ]
Creative refresh made performance worse
[ Best tool ]
ChatGPT + Claude
[ Weak AI ask ]
Why did the refresh fail?
[ Better AI ask ]
Signals to check
Old vs new metrics, script, visuals, audience, placement
Decision rule
Roll back if the refresh removed the original winning signal.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
13
[ Growth symptom ]
Many creatives get clicks but weak users
[ Best tool ]
Claude + ChatGPT
[ Weak AI ask ]
Why are users low quality?
[ Better AI ask ]
Signals to check
CTR, event CVR, retention, reviews, store page, ad claim
Decision rule
Avoid scaling clicky creatives that damage downstream quality.
25 UA AI Diagnostic Cards
[ Growth symptom ]
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
[ Decision rule ]
Market / Source Problems
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
14
[ Growth symptom ]
Cheap GEO brings weak users
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Is this GEO good?
[ Better AI ask ]
Signals to check
CPI, CPA, retention, purchase/ deposit/trial rate, fraud signals
Decision rule
Cheap installs are not growth unless quality follows.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
15
[ Growth symptom ]
Partner traffic looks “too good”
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Is this partner good?
[ Better AI ask ]
Signals to check
Install volume, event depth, retention, fraud, source transparency
Decision rule
Do not trust low CPI without downstream validation.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
16
[ Growth symptom ]
One source scales but quality drops
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Should we keep scaling this source?
[ Better AI ask ]
Signals to check
Spend curve, CPA, retention, sub-source,
GEO, placement
Decision rule
Scale only the segments that preserve quality.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
17
[ Growth symptom ]
New market starts strong, then collapses
[ Best tool ]
ChatGPT + Perplexity
[ Weak AI ask ]
Why did this market stop working?
[ Better AI ask ]
Signals to check
Reach, frequency, CTR, CPI, CPA, competition, localization
Decision rule
Do not assume early market performance is stable.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
18
[ Growth symptom ]
Fraud signals are unclear
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Is this traffic fraudulent?
[ Better AI ask ]
Signals to check
CTIT, retention, event timing, device patterns, source split
Decision rule
Escalate suspicious patterns, but don’t accuse without evidence.
25 UA AI Diagnostic Cards
[ Growth symptom ]
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
[ Decision rule ]
Data / Tracking Problems
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
19
[ Growth symptom ]
Metrics changed after app update
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Why did performance change?
[ Better AI ask ]
Signals to check
App release date, event firing, funnel CVR, campaign changes
Decision rule
Check product/tracking before blaming media.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
20
[ Growth symptom ]
MMP and ad platform disagree
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Which number is right?
[ Better AI ask ]
Signals to check
Attribution windows, time zones, event definitions, SKAN, delays
Decision rule
Use one source of truth for decisions.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
21
[ Growth symptom ]
Attribution window makes channels look unfair
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Compare these channels.
[ Better AI ask ]
Signals to check
Click/view windows, conversion lag, channel type, goal
Decision rule
Do not compare channels without attribution context.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
22
[ Growth symptom ]
Event volume is too low to decide
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Should we pause this?
[ Better AI ask ]
Signals to check
Spend, installs, events, days live, variance
Decision rule
No budget decision without minimum data threshold.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
23
[ Growth symptom ]
Team wants to scale after one good day
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Should we scale?
[ Better AI ask ]
Signals to check
Days live, event volume, variance, ROAS lag, budget jump
Decision rule
One good day is not a scaling signal.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
24
[ Growth symptom ]
Team wants to pause after one bad day
[ Best tool ]
ChatGPT
[ Weak AI ask ]
Should we pause?
[ Better AI ask ]
Signals to check
3–7 day trend, volume, changes, source mix, tracking
Decision rule
One bad day is not a pause signal.
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CTR, CVR, target event rate, spend shift, GEO/ source mix, recent changes
Do not pause until tracking, volume,
and source/GEO
shifts are checked.
25
[ Growth symptom ]
AI gives a confident recommendation
[ Best tool ]
Claude
[ Weak AI ask ]
Is this recommendation right?
[ Better AI ask ]
Signals to check
Missing data, assumptions, confidence, business context
Decision rule
Never accept AI confidence as evidence.
Creative Problems
[ Growth symptom ]
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
A winning creative is fading
ChatGPT + Claude
Is this creative tired?
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CTR trend, CPA trend, frequency, spend, audience, bid changes
Refresh before replacing if the core angle still works.
08
CTR is slowly declining
Claude
How do we improve CTR?
Check if higher CPI is actually a bad
enough to justify it. Compare cost, events, retention, and ROAS.
CTR by day, first 3 seconds, frequency, audience, format
Do not change the whole concept if only the hook is weak.
09
New creatives keep losing to old winners
Claude
Why are new creatives bad?
Compare pre-scale and post-scale
performance.
Identify whether the drop came from audience expansion, GEO shift, creative fatigue, bid pressure, or cohort lag.
Hook, promise, proof, pacing, CTA, audience fit
New creatives should evolve the winning logic, not abandon it.
10
Hook works in one GEO but fails in another
Claude
Localize this creative.
Check whether the install growth came from lower-quality sources, new GEOs, different creatives, store mismatch, or tracking changes.
GEO, language, cultural context, CTR, comments, store CVR
Do not localize words only; localize the reason to care.
11
Creative refresh made performance worse
ChatGPT + Claude
Why did the refresh fail?
Check whether the install growth came from lower-quality sources, new GEOs, different creatives, store mismatch, or tracking changes.
Old vs new metrics, script, visuals, audience, placement
Roll back if the refresh removed the original winning signal.
12
Many creatives get clicks but weak users
Claude + ChatGPT
Why are users low quality?
Check whether the install growth came from lower-quality sources, new GEOs, different creatives, store mismatch, or tracking changes.
CTR, event CVR, retention, reviews, store page, ad claim
Avoid scaling clicky creatives that damage downstream quality.
13
Market / Source Problems
[ Growth symptom ]
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
Cheap GEO brings weak users
ChatGPT
Is this GEO good?
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
CPI, CPA, retention, purchase/deposit/trial rate, fraud signals
Cheap installs are not growth unless quality follows.
14
Partner traffic looks “too good”
ChatGPT
Is this partner good?
Check if higher CPI is actually a bad
enough to justify it. Compare cost, events, retention, and ROAS.
Install volume, event depth, retention, fraud, source transparency
Do not trust low CPI without downstream validation.
15
One source scales but quality drops
ChatGPT
Should we keep scaling this source?
Compare pre-scale and post-scale
performance.
Identify whether the drop came from audience expansion, GEO shift, creative fatigue, bid pressure, or cohort lag.
Spend curve, CPA, retention, sub-source, GEO, placement
Scale only the segments that preserve quality.
16
New market starts strong, then collapses
ChatGPT + Perplexity
Why did this market stop working?
Check whether the install growth came from lower-quality sources, new GEOs, different creatives, store mismatch, or tracking changes.
Reach, frequency, CTR, CPI, CPA, competition, localization
Do not assume early market performance is stable.
17
Fraud signals are unclear
ChatGPT
Check whether the install growth came from lower-quality sources, new GEOs, different creatives, store mismatch, or tracking changes.
CTIT, retention, event timing, device patterns, source split
Escalate suspicious patterns, but don’t accuse without evidence.
18
Data / Tracking Problems
[ Growth symptom ]
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
Metrics changed after app update
ChatGPT
Why did performance change?
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
App release date, event firing, funnel CVR, campaign changes
Check product/tracking before blaming media.
19
MMP and ad platform disagree
ChatGPT
Which number is right?
Check if higher CPI is actually a bad
enough to justify it. Compare cost, events, retention, and ROAS.
Attribution windows, time zones, event definitions, SKAN, delays
Use one source of truth for decisions.
20
Attribution window makes channels look unfair
ChatGPT
Compare these channels.
Compare pre-scale and post-scale
performance.
Identify whether the drop came from audience expansion, GEO shift, creative fatigue, bid pressure, or cohort lag.
Click/view windows, conversion lag, channel type, goal
Do not compare channels without attribution context.
21
Event volume is too low to decide
ChatGPT
Should we pause this?
Check whether the install growth came from lower-quality sources, new GEOs, different creatives, store mismatch, or tracking changes.
Spend, installs, events, days live, variance
No budget decision without minimum data threshold.
22
Decision Problems
[ Growth symptom ]
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
Team wants to scale after one good day
ChatGPT
Should we scale?
Separate this CPA increase into auction, creative, funnel, tracking, GEO mix, and source quality causes. Rank each cause by evidence and missing data.
Days live, event volume, variance, ROAS lag, budget jumpDays live, event volume, variance, ROAS lag, budget jump
One good day is not a scaling signal.
23
Team wants to pause after one bad day
ChatGPT
Should we pause?
Check if higher CPI is actually a bad
enough to justify it. Compare cost, events, retention, and ROAS.
3–7 day trend, volume, changes, source mix, tracking
One bad day is not a pause signal.
24
AI gives a confident recommendation
Claude
Is this recommendation right?
Compare pre-scale and post-scale
performance.
Identify whether the drop came from audience expansion, GEO shift, creative fatigue, bid pressure, or cohort lag.
Missing data, assumptions, confidence, business context
Never accept AI confidence as evidence.
25
Bonus: 25 Copy-Paste AI Asks for UA Teams
[ Copy-paste AI ask ]
The UA AI Diagnostic Playbook
25 mobile growth problems, 100+ checks, and AI prompts that help you find what actually changed
Most UA teams don’t need more AI prompts. They need a faster way to understand what actually changed. CPA jumped. ROAS dropped. A winning creative started fading. A cheap GEO brought users who never converted. This playbook gives you 25 UA diagnostic cards to separate real signals from noise — before you pause, scale, refresh, or report.
Final Checklist
Before you change budget, pause a source, or call a creative a winner
Is the data volume big enough?
Are date ranges consistent?
Did tracking or attribution change?
Did budget, bids, or audience change?
Did GEO/source mix change?
01
02
03
04
05
07
s there cohort lag?
Are we optimizing the right KPI?
25 mobile growth problems, 100+ checks, and AI prompts that help you find what actually changed
Most UA teams don’t need more AI prompts. They need a faster way to understand what actually changed. CPA jumped. ROAS dropped. A winning creative started fading. A cheap GEO brought users who never converted. This playbook gives you 25 UA diagnostic cards to separate real signals from noise — before you pause, scale, refresh, or report.
05
08
Did AI explain its logic?
Did AI show what evidence is missing?
09
10
Did a human UA owner approve the final action?
06
The UA AI Diagnostic Playbook
25 mobile growth problems, 100+ checks, and AI prompts that help you find what actually changed
Most UA teams don’t need more AI prompts. They need a faster way to understand what actually changed. CPA jumped. ROAS dropped. A winning creative started fading. A cheap GEO brought users who never converted. This playbook gives you 25 UA diagnostic cards to separate real signals from noise — before you pause, scale, refresh, or report.
Final Checklist
Before you change budget, pause a source, or call a creative a winner
Is the data volume big enough?
01
Are date ranges consistent?
02
Did tracking or attribution change?
03
Did budget, bids, or audience change?
04
Did GEO/source mix change?
05
Is there cohort lag?
06
Are we optimizing the right KPI?
07
Did AI explain its logic?
08
Did a human UA owner approve the final action?
09
Did AI show what evidence is missing?
10
AI will not replace UA judgment.
But it can make the first diagnosis faster, cleaner, and easier to challenge.
Use this playbook to ask better questions, catch weak signals earlier, and avoid acting on noisy data.
Final Checklist
Before you change budget, pause a source, or call a creative a winner
Check this first:
-
Is the data volume big enough?
-
Are date ranges consistent?
-
Did tracking or attribution change?
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Did budget, bids, or audience change?
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Did GEO/source mix change?
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Is there cohort lag?
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Are we optimizing the right KPI?
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Did AI explain its logic?
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Did AI show what evidence is missing?
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Did a human UA owner approve the final action?
Creative Problems
Performance Problems
[ Growth symptom ]
[ Best tool ]
[ Weak AI ask ]
[ Better AI ask ]
Signals to check
[ Decision rule ]
A winning creative is fading
ChatGPT + Claude
Is this creative tired?
Identify whether this looks like creative fatigue or a media buying change. Compare early vs recent performance and suggest refresh options that keep the winning angle.
CTR trend, CPA trend, frequency, spend, audience, bid changes
Refresh before replacing if the core angle still works.
08
CTR is slowly declining
Claude
How do we improve CTR?
Diagnose whether the opening hook, visual pattern, offer, audience saturation, or format is losing attention. Suggest 5 refresh directions.
CTR by day, first 3 seconds, frequency, audience, format
Do not change the whole concept if only the hook is weak.
09
New creatives keep losing to old winners
Claude
Why are new creatives bad?
Compare new concepts against the old winner. What core promise, emotion, format, or proof point did the new versions lose?
Hook, promise, proof, pacing, CTA, audience fit
New creatives should evolve the winning logic, not abandon it.
10
New creatives keep losing to old winners
Claude
Why are new creatives bad?
Compare new concepts against the old winner. What core promise, emotion, format, or proof point did the new versions lose?
Hook, promise, proof, pacing, CTA, audience fit
New creatives should evolve the winning logic, not abandon it.
11