I installed Ignited via SideStore. No Jailbreaking necessary. Not computer tether. SideStore can renew the side loaded emulator every 7 days when on WiFi. The iPhone is perfect for DS emulation with a stylus.
(Ignited is a fork of Delta with more options, and SideStore is a fork of AltStore, with no computer tether needed)
It has some nice qol functions. My favorite is auto saving your state when you quit a game and re loads it when you come back. There are also more options for skins and other settings. Also my sync from google drive on delta loaded everything onto ignited seamlessly (note quick saves were not imported)