RTP Calculator is the essential tool for any sports bettor who wants to understand the real value behind the odds. For every bet, it instantly reveals the Return To Player (RTP) rate — the theoretical percentage of stakes returned to players — so you know exactly how much an offer really gives back.
HOW IT WORKS
Create a bet analysis and enter the odds for each possible outcome.
Enter odds as displayed by your bookmaker (decimal, fractional or American) and convert them to your preferred format in one tap.
The app instantly calculates the Return To Player (RTP) rate — the theoretical percentage of stakes returned to players — and the bookmaker's margin.
A color indicator (red to green) lets you read the quality of the odds at a glance.
Save your analyses, edit or duplicate them anytime, and share them as an image.
KEY FEATURES
Instant calculation of the Return To Player (RTP) rate.
Support for any number of outcomes per event.
Decimal, fractional and American odds formats, with automatic conversion.
Note the bookmaker for each outcome to compare offers across operators.
Save, edit and duplicate your bet analyses.
Share an analysis as an image in one tap.
100% offline — your data stays on your device. No account, no sign-up.
WHO IS IT FOR?
- Sports bettors looking to evaluate the expected value of their sports bets.
- Sports bettors looking to compare odds from different bookmakers on the same event.
Note : RTP Calculator is a decision-support tool. It does not encourage gambling — it helps you select your bets more wisely.
For any question regarding the app, feel free to reach out: julien.faure1007@free.fr