Would you trust a vault app more if it worked fully offline?

I’ve been thinking a lot about how much trust a privacy app should ask from the user.

With Xsilent, I chose to keep the core experience local-first: no account required, no mandatory cloud storage, and private files stay on the device during normal use.

But I’m curious how people here think about this trade-off.

Would you trust a private photo/file vault more if it worked fully offline, or do you actually prefer cloud sync because of convenience and recovery?

For me, the interesting part is the balance between:

• privacy

• convenience

• backup

• ease of recovery

• transparency about where files are stored

I’d be interested to hear what would make you trust — or avoid — a privacy-focused Android vault.

For reference, this is the app I’m building:
https://tsidevstudio.com/apps/xsilent?lang=en