Write On PDF is a great app, much better than Adobe Acrobat. It would be an even better app if the following features were added:-
Ability to select font sizes smaller than 8, this is especially important since Roboto Condensed was removed in the July '22 update (along with several other fonts).
Ability to use keyboard shortcuts e.g. <ctrl-C> for copy and <ctrl-P> for paste.
Ability to edit files on external SD card. The July '22 update copies the file to internal storage but this may cause confusion when reopening file because it will seem as if all the edits have been lost of you open the original file on the SD card.
Ability to use as a Standalone App by default. Currently, Write On PDF has to be invoked via My Files, although it was possible to select Add Shortcut from menu once WriteOnPDF had been opened.
I've never heard of this PDF app but I think I'll give it a try because I work with PDF documents quite often. In general, I really like the Pandadoc tools, for example,https://www.pdfplatform.com/split, which I often use, because I periodically need to split the document into separate files. If you also work with PDF, then you should pay attention.