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)
I’m just at the beginning but I love the fresh gameplay and look and still get memories of Pokemon gold. I also recommend the Zelda on DS (Phantom Hourglass was awesome!!!)