Support

Questions, bugs, and feature requests all go to one address, and a person reads them.

Common questions

Where is my data stored? Is it backed up anywhere?

Everything stays on your phone. There is no account and no cloud sync, which also means nothing is backed up automatically. If you lose or wipe your phone without exporting first, the data is gone. Use Backup in Settings if that matters to you — and it probably does. Here is how to do it.

How do I move to a new phone?

On the old phone, create a backup from Settings and save the file somewhere you can reach from the new one (Files, iCloud Drive, Google Drive, or email it to yourself). Install Logbook on the new phone and restore from that file. Do this before you wipe the old device. The backup guide walks the whole thing through with screenshots.

Does it work without an internet connection?

Yes, entirely. Every feature works offline, including barcode scanning, which checks a database bundled inside the app. Two optional features can reach the internet if you switch them on — barcode lookup for products the offline database doesn't know, and live food search — and both are off by default.

How do I delete all my data?

You can delete individual entries anywhere in the app. To remove everything at once, go to Settings → Data → Delete all data. It shows you what it is about to delete, offers to export a backup first, and asks you to confirm. Uninstalling Logbook does the same thing, because all your data is in the app's private storage. Either way it is permanent, and there is no copy held anywhere for us to restore, so export first if you might want it back.

How do I connect Apple Health or Health Connect?

In Settings, connect your device's health service and grant read access. Logbook only ever asks to read — steps, active energy, workouts and body weight — and never writes to your health record. Nutrition is separate again: connecting for weight or activity does not start reading food data until you point a specific metric at it. You can revoke access at any time in your device's own Health Connect or Apple Health settings. The app works fine without ever connecting.

What does the paid upgrade include, and is it a subscription?

It is a one-time purchase, not a subscription. The app is fully usable without it. Buying it once unlocks the premium features on that store account.

I paid, but a new phone shows the app as unpaid.

Use "Restore purchases" in Settings while signed in with the same Apple or Google account you bought it with. The purchase is tied to that store account, not to the device — there is no Logbook account for it to be attached to.

How do I get a refund?

Refunds are handled by the store, not by us, since that is where the payment happened. On iOS, use reportaproblem.apple.com. On Android, use Google Play's order-refund process. Write to support anyway if something went wrong — it may be a bug worth fixing.

My reminder didn't go off.

Check that notifications are enabled for Logbook in your device settings, and that battery optimization isn't suspending the app — on Android this is the usual cause, and the setting is often called "unrestricted" or "don't optimize". Reminders deliberately never mention medications, doses or weights in their text, so nothing sensitive appears on your lock screen. There is a full troubleshooting guide, with the setting named per manufacturer.

Can Logbook tell me what dose to take?

No, and it never will. Logbook records what you did; it does not advise, diagnose, or recommend a dose. Those decisions belong to you and your healthcare provider.

Is my data private?

There is no server to send it to. No analytics, no crash reporting, no ads, no tracking identifiers. The privacy policy spells out the whole picture, including the two optional features that can make a network request and exactly what each one sends.

Reporting a bug

The easiest way is from inside the app: Settings → Help → Report a problem. It opens an email addressed to me with your app version, device and OS version already filled in, so all you have to write is what went wrong. Nothing is sent until you send it, and you can edit or delete any part of the message first — including the three lines about your build. It carries no health data: nothing you have logged is in it.

If you would rather write from scratch, a useful report includes:

• The app version, shown at the bottom of Settings → About in the app — you can select the line and copy it
• Your device and OS version — for example "iPhone 14, iOS 18.2"
• What you were doing when it happened, and what you expected instead
• Whether it happens every time, or only sometimes

The app has no crash reporting of its own, and never sends usage data. Apple and Google do pass on anonymous crash reports for people who have opted into sharing diagnostics with developers, so an outright crash may reach me on its own — but everything short of one, which is most things, only becomes known if you tell me. That is a deliberate trade: privacy in exchange for depending on you. It is why these emails matter more than they would for most apps.

Feature requests

Welcome, and worth sending. Requests that fit how people actually manage treatment — especially anything the current data model can't represent — carry the most weight.