Use APKPure App
Get Evolution Calc for Pokémon GO old version APK for Android
नि GO के लिए सी.पी. कैलक्यूलेटर
This app is for everybody who wants to know how much the CP of your Pokemon will increass after evolving. Simply pick your Pokemon, enter your current CP and the app will tell you how much of an increase is possible. Enjoy! ;)