EVs (Effort Values)

EVs are a secondary value that adds to the main stats of your Pokemon.You gain EVs by defeating Pokemon in the wild.Each Pokemon gives 1 or 2 EV points for a specific stat.You can spend your EVs on the stats that you want to by click on the EV tab of your Pokemon.

You can spend up to a maximum of 510 total EV Points and a maximum of 252 total EV Points for an individual stat.

At level 100, your Pokemon gains 1 point in their stats for every 4 points in their EV stat.So if you have 252 EV points in Attack, it will raise your Pokemon’s attack stat by 63 points at level 100.