I’m using the app on android, it’s maybe a little messy when you use it for the first time but when you start to use it daily, I think there is a lot of useful features all around. I understand for the font, but it’s not something that is bothering me, I can’t say anything on that. For the issue you are facing with To Do, you actually have two ways to create a To Do list:
Take a look at Joplin
Veracrypt
Dope!