I have been using Outline for iPad on and off for a few years. I love OneNote on the computer and so when this came out, I jumped on it for the iPad.
Now, the only thing that keeps me from using this exclusively is the lack of ability to change the fonts.
In OneNote for iPad (and all the other platforms) I can change the font typeface of any text.
Outline does not allow that to change on the iPad or iPhone.
This is what keeps me still using OneNote more than Outline.
Please let me know if this is a feature that you will be implementing and when.
I would like to stay with Outline exclusively because I like it more but that feature is very nice and helpful.
As a side note to this, the ability to create custom formats for the format or style command.