Use this guide to safely export your data and fully restore it whenever needed.
Important note: By default your entries live encrypted on your device only, not on a server of ours. That also means: if the device is lost, everything is lost without a backup. In the browser there is more: cleared browser data or a private window take the data with them. If you switch on the cloud backup, an encrypted copy additionally rests with us – we cannot read it.
Preparation
- Open Settings, go to Data, and tap Import & Export.
- Choose a safe storage location for the file, such as Files, iCloud Drive, or a local folder.
- Pick a strong password and store it carefully. Without this password, the backup cannot be restored.
Create a backup
- Tap Export Backup.
- Enter your backup password and confirm the dialog.
- The share sheet opens on your phone. This is where you choose the destination: on iPhone and iPad via Save to Files, on Android for example Google Drive or Files. If you dismiss this sheet, no file remains that you can reach.
- In a browser, a file named lumen-backup-YYYY-MM-DD.json is downloaded automatically.
- Then verify that the file exists and that your password is stored safely.
Where the backup should live
- The share sheet is the moment of decision: you choose whether the file goes to a cloud (iCloud Drive, Google Drive) or stays on the device only.
- If it stays on the device only, it is gone with the device. In case of theft, loss or a broken screen, a backup that sits next to the original is no backup at all.
- So keep at least one copy off the device: iCloud Drive or Google Drive, a folder on your computer, a USB stick, or send it to yourself by email. The file is encrypted with your password, it is safe to keep there.
- On iPhone and iPad the iCloud backup includes your Lumen data, provided it is switched on: Settings, your name, iCloud, iCloud Backup. Under Apps using iCloud Backup, check that Lumen is not switched off.
- On Android, Google backup deliberately does not include Lumen: your entries never leave the device on their own. There, exporting from the app is the only way to get a backup.
Cloud backup (MAGIS)
- Open Settings, Data, Cloud backup and tap Set up backup.
- The app shows your backup key once: five blocks of five characters. Keep it somewhere other than your phone – write it down, print it, or put it in a password manager.
- From then on the app backs up by itself: every time you open it, and after you finish an examen. How often at most is up to you under Back up automatically — after every entry, once a day, or once a week. Every backup is fetched again straight away and checked; only then does it count as done.
- On a new device tap Restore backup and enter the key. Upper and lower case, spaces and mixed-up characters like O and 0 are sorted out by the app.
- If you lose the key, the data does not come back. We hold no copy of it and cannot open the backup – that is the price for nobody else being able to either.
Restore a backup
- Open Settings, Data, and Import & Export again, then tap Import Backup.
- Enter exactly the same password that you used during export.
- Select the saved backup file with the .json extension.
- Wait for the success message. After that, journal entries, transgressions, intentions, and settings from the backup are active.
- Important: Importing replaces the data currently stored in the app with the backup content.
If something does not work
- If import fails, the password is usually incorrect. Enter it again exactly as before.
- If no file can be selected, confirm that it is a .json backup file and that it was saved completely.
- If data is missing, restore an older backup copy or create a fresh backup from the current app state.
Security notes
- Backups are encrypted with AES-256 in the app.
- Store the file and the password separately.
- Create new backups regularly, especially before browser updates, data cleanup, or device changes.