I assume this is not a version number (I don’t believe the applets have a version number, at least not from the viewpoint of Fidesmo) but the applet ID. Compare the number of other applets to the IDs Amal gave a few months ago for the manual deployment on iOS – they are the same.
Is the source for the Apex Manager app available somewhere on GitHub? If not, are you planning to open source it later on?
Currently, the app seems to only recognize applets by VivoKey. Is support for displaying all applets (including those of third party vendors) on your roadmap? If the code is available as open source somewhere, I’d be interested in trying to implement this myself (though I’m not much of a Android developer).