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.
Now with a lucky egg XP calculator aswell as an upgrade CP calculator. It's even possible to display strengths and weaknesses of Pokemon.
Big update: We've added an IV calculator in our latest release.

From version Evolution Calc for Pokemon GO 2.5:

Fixed Fairy Pokemon
Disabled fullscreen ads

All versions
Evolution Calc for Pokemon GO 2.5

Version:2.5

Uploaded:August 3, 2016 at 8:12PM UTC

File size:3.1 MB

Downloads:10,489

Evolution Calc for Pokemon GO 2.3

Version:2.3

Uploaded:August 1, 2016 at 3:22PM UTC

File size:3.1 MB

Downloads:2,620

Evolution Calc for Pokemon GO 2.2

Version:2.2

Uploaded:July 31, 2016 at 9:55PM UTC

File size:3.1 MB

Downloads:6,457

Evolution Calc for Pokemon GO 2.1

Version:2.1

Uploaded:July 30, 2016 at 6:25PM UTC

File size:3.09 MB

Downloads:2,629

Evolution Calc for Pokemon GO 2.0

Version:2.0

Uploaded:July 28, 2016 at 7:21PM UTC

File size:3.09 MB

Downloads:1,583

Evolution Calc for Pokemon GO 1.9

Version:1.9

Uploaded:July 27, 2016 at 7:49PM UTC

File size:3.07 MB

Downloads:986

Evolution Calc for Pokemon GO 1.8

Version:1.8

Uploaded:July 25, 2016 at 10:21PM UTC

File size:3.49 MB

Downloads:2,215

Evolution Calc for Pokemon GO 1.7

Version:1.7

Uploaded:July 24, 2016 at 9:30PM UTC

File size:3.48 MB

Downloads:6,120