Chiming in to say I would also love Krita on iPad, and would be happy to pay for it. I’ve always preferred its brush engine over procreate, and it would seriously make my workflow easier.
Are you referring to the simple mode feature they have? https://www.youtube.com/watch?v=b7IaJI6rW_g
I do agree with your last suggestion. It would be nice to have Krita on iPad since a large number of artists are on there, but it might be hard to compete at the estimated price point as well as limited developers.
I paid that much for ArtStudio Pro for my iPad so to have Krita on my iPad I’d pay it
me too! now that blender’s coming to ipad, i have hopes for Krita. Misinformed perhaps, but i’m hopeful 
There’s two things you have to keep in mind:
Krita and Blender use two different versions of the GPL. Blender decided not to move to the GPLv3 when it was published, so they’re still on v2 similar to the linux kernel. Krita is GPLv3 only. Blender could have done two things: Distribute a non GPL build (which they have the right to as copyright holders) or apple interpreted the GPLv2 just enough to make it legal to distribute on the app store.
As pointed out above, the GPLv3 is much stricter than v2, so it’s even harder to get GPLv3 apps on the app store. Note that apple used to and still does, distribute GPLv2 applications like the bash shell, so they’re not entirely against the GPL. They just strongly prefer version 2.
All the components that together make Blender are compatible under the newer GNU GPL Version 3 or later. That is also the license to use for any distribution of Blender binaries.
That’s what Blender says on their website. (https://www.blender.org/about/license/)
To my knowledge SideStore should be a compatible choice as it’s open source.
I’d pay for Krita on iPad, I think the revenue would make up for the cost. The thing holding me back from maining Krita is that it’s not on iPad, it would be so worth it if it actually got on the App Store, im sure it would compete with other apps for illustration. And a lot of people already payed for it on the Windows Store/Mac App Store without knowing it’s free and open source. I really hope the licensing issue gets resolved 