Comment by Godsend69
1 day ago
You might want to consider using a self-hosted database to store your data. Telemetry Blocklist (free) can help prevent any apps from phoning home, but it's not specific to this use case. If you're concerned about data security, you might want to explore other options for storing your health data offline.
Thanks for the advice. XDrip+ doesn't require internet access, and if it did then my GrapheneOS phone has a toggleable network permission for each app that I could utilize if I was worried. I wanted my data stored and backed up on an external database that I then backup nightly as part of my Proxmox homelab. With an external database I can build /use other tools to pull data from the database for that I would not be able to do from a phone app.