Feel like all platformers are retro, to some extent. But I'd say Super Phantom Cat has a great retro NES-era Super Mario vibe, albeit without the 8-bit graphics. If you want it to look retro, maybe Kero Blaster. Or Tiny Dangerous Dungeons for the Game Boy aesthetic. But I reckon Goblin Sword is the best out and out platformer on iOS.
Yeah Goblin Sword is easily the best in the bunch, on par with VVVVVV. My personal "Best-Of" list looks like this: VVVVVV Goblin Sword Kid Tripp Mutant Mudds Traps N Gemstones Shantae Mikey Trilogy Venture Kid Sword of Xolan League of Evil Rex Rocket INC, Stardash, Meganoid Bloo Kid 2 Most of the best games in the genre have high-style graphics, but then again, graphic style is a very broad subject in the genre considering despite the pixelly looks of Mikey titles they have very sharp, colorful visuals which isnt really how the retro ones really looked like.
Out of these I have goblin sword, sword of xolan, shantae, traps n gemstones, and mutant mudds, Definitly going to check out the others! Also have phantom cat and tiny dangerous dungeons
Some those might not be plat former and that old school, but I think you will find some interesting specimen here, Menehenheneheeeeeennn! Check out this video https://youtu.be/FoBHU9KsbRM
Really good game, but this is what i mean where it could or couldnt count as retro. Back in the day there really isnt a 2.5d platformer which this one is, but the gameplay and visuals outside of the 2.5d perspective would easily pass.
Another good platformers that might not be that retro but are really enjoyable are: -Adventures of Pip -Nobody said it was easy -Kelly (by ANIV, one of the most underrated games in the AppStore with awesome style and game design) -Icycle -Lost Socks: Naughty Brothers -Bean Dreams -Nub's Adventure
It is! I can't describe how much fun I have had playing it on my iPad with the awesome Mfi support they added!
Not sure if this is old school enough, but Momoka, which came out this year, was also great. A really fun little Metroidvania, with good touchscreen controls.