Free tools for app teams
Small, free tools for app developers and app marketers. They run in your browser, and you don't need an account.
Ratings & reviews
- App Rating CalculatorHow many 5-star ratings do you need to reach 4.5 stars? Calculate it for any App Store or Google Play app.Free · No account
- App Review Reply GeneratorWrite a reply to any App Store or Google Play review in seconds: pick the rating, the topic and the tone.Free · No account
- App Store Review DownloaderExport the latest reviews of any iOS app to CSV, up to 500 per country. Filter by stars, version and country.Free · No account
App metrics calculators
- Retention Rate CalculatorCalculate day 1, day 7 or day 30 retention for an app cohort, plus the churned share.Free · No account
- Churn Rate CalculatorCalculate churn for subscribers or users, convert it to monthly and yearly churn, and see the average lifetime.Free · No account
- LTV CalculatorCalculate app lifetime value from revenue per user, store fees and churn, and compare it with your acquisition cost.Free · No account
- ROAS CalculatorCalculate return on ad spend for app campaigns, with or without app store fees.Free · No account
- Conversion Rate CalculatorCalculate App Store, Google Play or website conversion rate, and see what a better rate is worth.Free · No account
- DAU/MAU CalculatorCalculate your app’s stickiness: the DAU/MAU ratio and how many days a month the average user is active.Free · No account
App Store optimization (ASO)
- App Store Listing AnalyzerGet an ASO score for any iOS app: name, description, screenshots, ratings and updates, with a tip for each.Free · No account
- Screenshot & Icon Size CheckerEvery App Store and Google Play screenshot and icon size. Drop in your images and see which device slot each one fits.Free · No account
Learn the terms
Not sure what a metric means or how to read it? The app marketing glossary explains them, with formulas and examples: app metrics, reviews and ratings and app store optimization.