A very interesting app you've built. So good in fact, I would license it as Creative Commons Attribution Non-commercial. Anyone can take everything and re-upload your work as their own and monetize your work as they please.
Well done on your release though. I think this project is worthy of Apple promoting it (Seriously). Unfortunately, they are mostly after projects that have subscriptions.
I have licensed it under the MIT License like NetNewsWire. I honestly don't mind if someone makes something commercial from this - this app wouldn't have been possible without opensource software and data (from Detexify). I made this app mostly as a learning exercise, and to test my skills.
Thank you so much for the kind words! I don't think Apple would promote it because LaTeX means something completely different to most people haha.
