GeoGebra Calculator Suite

UPDATE: An app developer gave the key to saving files locally: install a third party file manager app (e.g. Simple File Manager or Amaze or Material File Manager, etc) and then use the "Share" function inside Geogebra to share with the file manager. I am using Amaze on my phone for this purpose (open source app with which I"m already familiar and already know it is a target for sharing). For some reason, the AOSP file manager and Google Files are not share targets in Geogebra (at least not on my phone). This "feature" of sharing to save locally needs to be more prominently shown somehow (e.g. in the app description, sharing as an option in the "save" dialog, etc.) It would still be nice to have the ability to save locally without having to rely on another app. Originally, I rated this app two stars and complained about the inability to save files locally in a way that I was hoping would get attention. Apparently, it worked.

My only complain so far is the inability to export/import locally, like the PC version does.

!!! TOTALY FAILS OFFLINE !!! Unable to save locally makes app useless offline. And it does not have darktheme.