eNES: NES & SNES Retro Emu

I tried playing Metal Gear and had to save everytime I got to a new screen so it wouldn’t erase my progress because it kept crashing at random. Also the D Pad is pretty annoying since you can’t just slide your finger over the thing to change direction, you have to remove your finger from the screen entirely to stop and press another directional arrow. If you could fix both of those things I think this would be a great emulator for iOS.

Download nes Mario Bros. Runs well, but the b and a button cannot be pressed at the same time. So you can’t hold run and just rock your thumb to jump. Makes OG Mario pretty hard.

I've tried a ton of diff methods when I save to files and save the rom in the apps main directory that is the only way I can get the game to show up and it does recognize it but when I go to launch it I get this error message that the file doesn't exist or is corrupted when they clearly are valid NES rom files that do work lol