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)
The DS Zelda are also amazing. They don’t require any buttons to be played (except for L trigger to activate your tool faster) I created a full screen skin with no buttons just dual screens. Save load and home buttons at the bottom and it plays wonderfully.