Private GLP-1 tracker: no account or cloud sync
A health tracker does not need an account to record a Shot or Weight. Where those records are stored, what leaves your phone and who controls the backups are worth understanding before you choose an app.
What "no account" actually means
Vialume has no sign-up screen because there is nothing to sign up to. There is no Vialume server holding your records, no username attached to them, and no password that could be leaked. What you log is written to a database file inside the app's private storage on your phone. Vialume itself does not transmit those health records; your device's backup service may copy app-private data according to your backup settings.
The practical consequences are worth being precise about, in both directions:
- Nobody at Vialume can read your records. Not as a promise of good behaviour — there is simply no copy to read.
- There is no Vialume health-record server to breach. Your phone and any backups still need protection; local storage is not a guarantee against every risk.
- You control deletion of your health records. Reset or uninstall the app, and manage exported files and device backups separately. Anonymous purchase-service data has a separate deletion-request process.
- The flip side: nobody can restore it for you. If you lose the phone with no backup, the records are gone. This is the real cost of local-only storage, and it is why the app can export everything to a single file at any time.
Backups are yours to hold
There is no Vialume cloud sync. For a backup you control, Vialume exports your history and vial inventory as one JSON file, with separate CSV exports for tracking records, whenever you ask. Where it goes is your choice — your own drive, your own storage, a folder on the phone. The paid tier can write that backup automatically into a folder you nominate, on the device, on a daily schedule when you open the Android app.
Full backups always include vial names, counts, strengths, notes and stock dates, even when you exclude goals. Plus automatic Android backups contain the same inventory. If an older backup has no inventory, restoring it leaves your current stock untouched.
Keep one somewhere you will still have access to if the phone is lost. Separately, your operating system may retain or restore app data through its own device backup service. Check those settings; Vialume does not control that copy.
What does leave the device, stated plainly
Claiming "nothing ever leaves your phone" without qualification would be dishonest, so here are the main cases described in the privacy policy:
- Plus access checks use a random anonymous RevenueCat identifier on configured store-build launches, even before a purchase. If a purchase exists, the app store and RevenueCat also process its purchase history/token. Vialume does not send them your health records.
- If you turn on Health Connect, weight can be shared with the Android health platform on your device, and step counts read from it. That is a permission you grant explicitly and can revoke in Android settings.
- If you export or share a file, it goes wherever you send it.
- Your device's backup service may copy app-private data according to your backup settings, independently of Vialume's own export feature.
There is no analytics SDK, no advertising identifier, no crash-reporting service and no tracking of any kind. The full detail is in the privacy policy.
How to check any health app for yourself
You do not have to take anyone's marketing at face value, including ours. On Google Play, every app has a Data safety section, and it is the most useful thirty seconds you can spend before installing a health app:
- Open the Play listing and scroll to "Data safety". It lists what the developer says they collect and share.
- Look for "Health and fitness" under collected data. If a tracker collects it, your logs are going somewhere.
- Check "Data shared with third parties". Sharing is a stronger claim than collecting, and worth reading closely.
- Read the account and storage explanation. An account alone does not tell you where health records live; check the privacy policy and backup settings.
- Check whether you can export. An app that will not give you your data back is one you cannot leave.
Run that on any tracker you are considering — the answers vary more than you would expect.
Why this app was built this way
Vialume was written by one developer who is on a GLP-1 and wanted a tracker that did not require handing a medication history to a company that might be acquired, breached, or simply change its policy in three years. Local-only was the starting requirement, not a feature added later — which is why there is no account to delete and no server to trust.
Every chart of your own data is free, permanently. The paid tier adds things the app does for you — reminders, a doctor-ready PDF, automatic backups — never access to what you already typed in.
