Accuracy depends on the level of Pokémon.
STEP FOR USE
1. Capture Pokémon detail on Pokémon GO application.
2. Open this application.
3. Choose trainer level.
4. Select Photo from Library.
5. This application will find Pokémon's level, Combat Power (CP) and HP (If it is not correct You can customize your own.)
6. Tap on Result.
7. Application will show IV and Best Move for Pokémon.
8. Share it to your friends.
Judge Ball is not an official Niantic and The Pokémon Company application.