You might like Treesheets, but you're not going to be able to edit it on mobile with it. You'd have to save as HTML to view. It's a grid-based editor that I use for stuff like this.
Please put an NSFW tag on this. I was on the train and when I saw this I had to start furiously masturbating. Everyone else gave me strange looks and were saying things like “what the fuck” and “call the police”. I dropped my phone and everyone around me saw this image. Now there is a whole train of men masturbating together at this one image. This is all your fault, you could have prevented this if you had just tagged this post NSFW
This has inspired me. My Instant Pot has been throwing a lot of errors lately, I bet I can rig something up...