The free version of this app bad at the moment.
You would be better off using pages (IOS included) or ZoomNotes lite for now.
I can understand limitations to a pro version, but to limit the eraser is not smart. You can‘t even test the pure basics.
I would understand to limit export, or keyboard text.
But not a basic tools.
Furthermore it is missing so many Features yet that is unusable for me. Even what i read is included in the pro version.
There is a lot of potential but not fully used yet.
Here‘s some ideas to drastically improve this app in general:
1) Folders
2) Latex, MathXML,
3) Handwriting recognition (Text and equations)
4) Site length and high in mm
5) automated content of tables
6) highlighted Code snippets
7) Clouds: WebDAV, google drive etc.
8) absolut margins
9) footnote, endnote, number of site (automated)
10) lists
11) tables
12) import own templates
13) more than two notebooks in the free version
14) changing templates of more than one site
15) Printing option
16) Change templates only for printing, delete templates and only print content
17) Importing PDF’s (couldn‘t test entirely though because of free version)
18) exporting as JPEG
19) fluent tools ( free version hence no entire test)
20) Sounds, links, x-callbacks
21) presentation mode
22) Windows and Mac app to mirror actively written stuff
23) Missing good tutorial (since this app is not intuitive)
As you can see there are a lot of things missing. I can understand if you limit some functions but since this app doesn‘t have anything but a good pencil recognition this free version is not really usable.
My personal advice is to unlock basic tools for the free version and limit advanced tools and design packs for the pro version.