How it works
New ratings = ceiling(N × (target − current average) ÷ (new rating − target)), when new ratings exceed the target.
ASO and experiments
App rating target calculator
Estimate how many new ratings at a chosen score are needed to reach a target average.
- New ratings needed
- 600
- Average after new ratings
- 4.5
Assumes an exact arithmetic mean and no other ratings. Stores may round or display averages by region and version. It does not encourage fake ratings.
Worked example
1,000 ratings averaging 4.2 need 600 new 5-star ratings to reach an average of 4.5.
Assumptions and limits
Assumes an exact arithmetic mean and no other ratings. Stores may round or display averages by region and version. It does not encourage fake ratings.
Frequently asked questions
How do I use the app rating target calculator?
Estimate how many new ratings at a chosen score are needed to reach a target average.
Why can a target equal to the new rating be impossible?
If the current average is lower, any finite number keeps the average below the new rating. It only approaches the limit.
Do I need an account and are my inputs uploaded?
No account is required. Calculations run in your browser. Entered numbers and text are not included in tool analytics events; only the tool ID, language, and action are recorded.
Want to go past the numbers and see the real market?
Noctral shows estimated MRR, live ads, creators, and competitors so you can validate opportunities with real signals instead of projections.
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