On Android, try "IV & Toolkit for PokemonGo"
https://play.google.com/store/apps/details?id=hqt.apps.poke&hl=en
Otherwise, I just use http://pokeassistant.com
If you enter the info from the team leader's assessment, you can narrow down the possibilities.
If you are using Android, try "IV & ToolKit for Pokemon Go". You won't get banned for using it since it doesn't login to your account.
https://play.google.com/store/apps/details?id=hqt.apps.poke&hl=en