Free Google Play toolHow many 5-star ratings do I need? Google Play rating calculator.
Google Play shows a rating weighted towards recent ratings, so the lifetime-average maths most calculators use badly overstates the work. Enter your numbers to see how many new ratings you need, and how many weeks that takes.
Free · no signup · updated 5 October 2026
Google Play rating calculator
All fields update the result as you type.
Week by week
| Week | New ratings | Projected rating |
|---|
How many 5-star ratings do I need to raise my Google Play rating?
Divide the gap to your target by how far new ratings sit above it: n = R × (T − A) ÷ (a − T), where R is the number of ratings in Play's recent window, A your displayed rating, T your target and a the average of new ratings. With all-5-star ratings, a = 5.
The method, in the open.
Google says the rating shown on Google Play "is weighted towards more recent ratings", while Play Console also shows a separate lifetime average. That means only the ratings inside the recent window really move the number you care about.
If the recent window holds R ratings averaging A, and you add n new ratings averaging a, the displayed rating reaches the target T when (R·A + n·a) ÷ (R + n) = T. Solving for n gives n = R × (T − A) ÷ (a − T). Weeks needed = n ÷ your weekly rating velocity.
Google does not publish the window length, so "ratings in the recent window" is an input you control. A practical estimate is the number of ratings you received in the last few months, from the Play Console ratings report. The calculator also shows the lifetime-average answer side by side, which is what generic review calculators give you.
What the numbers look like.
Hypothetical example. An app shows 3.9★. About 2,000 ratings fall in the recent window, new ratings average 4.6★ after a stability fix, and it collects 300 ratings a week. The target is 4.2★.
Recency model: 2,000 × (4.2 − 3.9) ÷ (4.6 − 4.2) = 1,500 new ratings, about 5 weeks. A lifetime calculator applied to the same app's 50,000 total ratings says 37,500 ratings, about 125 weeks. The gap between those two answers is why the method matters.
For a real recovery, see the live game that gained +0.48★ in 28 days across 10.5K raters.
What this is based on
- "The rating that users see on Google Play is weighted towards more recent ratings." Play Console shows the lifetime average separately. Play Console Help
- Replying to reviews: in our 440K MAU case study, replied reviews were updated by +1.62★ on average, against +0.67★ for unanswered ones. Zeevron case study
- Crash and ANR rates above Google's bad-behaviour thresholds reduce discoverability, and unstable apps attract low ratings. Play Console Help
What it does not tell you
- Google does not publish the length or shape of its recency weighting. The window size is your estimate, so treat the result as a planning number, not a promise.
- The model holds old ratings fixed. In reality older ratings also age out of the window, which usually makes recovery a little faster than shown.
- The target must be below the average of your new ratings. If new ratings average 4.3, no volume of them will lift you to 4.5; fix the product or the prompt timing first.
- Displayed ratings can also differ by country and device type.
Questions people ask.
Why is my Google Play rating different from my average rating?
Google Play shows a rating weighted towards recent ratings, while Play Console's lifetime average counts every rating since launch. After a bad release the displayed rating drops faster than the lifetime average, and after a fix it recovers faster too.
How many 5-star reviews to go up a whole point?
Use the calculator with a = 5. Going from 3.5 to 4.5 needs n = R × (4.5 − 3.5) ÷ (5 − 4.5) = 2R, twice the ratings in your recent window. With lifetime maths it would be twice your total ratings, which is why recency matters so much.
Does replying to reviews improve my rating?
It can. Users can update a rating after you reply. In our 440K MAU app, replied reviews were revised by +1.62 stars on average against +0.67 for unanswered ones. Reply fast to negative reviews that report a fixed bug.
What is the safest way to get more ratings?
Use Google's In-App Review API at a positive moment, such as after a completed task, and never offer incentives or filter who sees the prompt. Google Play policy prohibits incentivised or manipulated ratings.
How long does a rating recovery take?
It depends on your rating velocity. The calculator divides the ratings needed by your weekly ratings. Apps with a few hundred ratings a week can recover several tenths of a star within a month once the underlying problem is fixed.
Does rating affect Google Play ranking and conversion?
Rating is visible on every search result and listing, so it shapes conversion directly, and Google reduces visibility for apps with poor technical quality. A higher rating usually means more installs from the same traffic.
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Get a rating recovery plan for your app.
We will read your reviews, find what is dragging the rating down, and write the reply and prompt plan to bring it back, within policy.