The official MoreheadTech AppStore.
Credits:
brandomplank for making the Flappy Bird app - https://github.com/TheResonanceTeam/TrollApps Mlemix on Discord for making Delta Exploits - https://deltaexploits.gg/ And YOU!
NOTE: The Flappy Bird app is not the official one, the official one only works on very old iOS versions, you can find it here: https://archive.org/details/flappy-bird-v-1.3_202412