mobile zombie horde shooter roguelite?

So im trying to remember/find this game i used to okay all the damn time as a kid, it was on the playstore and i have EXTREMELY vivid and happy memories of this game.

This came out around the time fruit ninja angry birds and jetpack joyride were all coming out and blowing up, it wss a 2d pixal art zombie horde shooter, i swear to god the title had a 7 in it? The app icon had one of the bosses who spawn every i think 5 waves? It was the big purple brute boss, the gameplay i'd describe as 2d mobile killing floor 2 but for free without ads.

I wanted to play it again but it's been so long i haven't actually downloaded it to my personal google account and don't have the time to log into me moms account just to scroll for hours. If anyone has played, knows, or has this game I'd live the help! Ty.