The VG Resource

I want to make a custom sprite sheet, but none of the pixel art makers I've found are functional or let you export .png's. Most of them look like a flash game or something that ran on iOS 2. The only website that keeps popping up is pixilart.com but everytime I try to export a .png or two it stops responding. I don't have any computers, I'm using an iPad, so an installation or something similar is out of the question. If anyone knows of a functional pixel art maker, please tell me.

Why not use Ms Paint? I use it all the time.

I highly recommend using a PC running Windows/macOS/Linux as a mobile device such as an iPad is far less capable when compared to a PC.

I've heard some good apps for Pixel art on both web and iPad are:
Piskel
Lospec
Procreate
Pixel Studio

If you ever get a PC running Windows/macOS/Linux, I recommend checking out Asesprite, or its FOSS equivalent LibreSprite.

Hope this helps.