misterdata

Synctrain is an open source (MPL2.0) iOS Syncthing client (which I made) with full native mobile-first UI and tight iOS integration (shortcuts, background processing, etc).

You are most likely in France: your government does not allow publishing an app containing cryptography (in this case, Golang's crypto implementations and a package used by Syncthing - only using iOS libs should be fine) without authorization (which can only be obtained through French forms, at which point I'd want a French lawyer to be involved, so no).

You could of course build the app yourself from source.

Also “apenstaartje” in Dutch (monkey’s tail)

Similarly, Trixie contains an updated version of Dovecot that (even though the version number seems to indicate otherwise) has a new configuration format that is not backwards compatible. This is clearly stated in the release notes but may be surprising nevertheless.

So, basically any local productivity tool, saving files in a synced folder.

While this works, Syncthing does not really provide anything for fine-grained collaboration or sharing (you only share full folders). Encrypted peers do allow storing files on a machine that you don’t have to trust.

This is cool!

Any tips for an app to use on iOS to capture the necessary .ply data?

Scaniverse is a great app by Niantic that can do this on-device, but it isn't very customizable and can't export its raw scanning data (exported .plys do not have the data this editor requires).