Final Android/Windows release (2021-02-28)

same as what's currently available on google play, so you should probably install that:
https://play.google.com/store/apps/details?id=spicedev.spicecompanion&hl=en_US&gl=US

Web release (2019-05-19)

This is the latest release of the web version.
Source on github is newer than this release, though the source of this version is included in the zip.