[Mobile] [2008 - 2015] Old school game I played on my dad's apple ipad as a kid.

Help me find an old game I played when I was a kid. Early 2008 mobile game to 2015 timeframe probably?...I played it on an apple ipad my dad had with the white wide charger. The Game is not the one in the photo and is just a reference.

Im honestly not even sure what the genere was. As far as I can recall it had no character customization, no dialog, and no clear goal. I think there might very been a timer maybe before other students started to chase you and beat your character up? The timer is the only part I think might not be accurate though.

The art style was simpler slightly than the reference image I provided but not by much.

The Game had an optional zombie mode as a side. It turned all the students into zombies and put green potions on very few spots in the school and outside of it i think. It turned the player into a zombie I think?. Your vision mightve been affected by the potion? A color of red on thw screen i think? You could also go outside I'm pretty sure.