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)
Can also vouch for pokemmo, it's like Pokémon but better. Global trade market, large playerbase, slightly more difficult than traditional Pokémon games, travel between kanto, johto, hoenn and unova as the same character (fire red/leaf green, heartgold/soulsilver, emerald, black/white)
It truly is the Pokémon game Nintendo will never make and I'll never go back to playing the normal games, it's that good.