Privacy policy
Effective 8 October 2026
Layerwatch collects nothing. It talks only to the 3D printer you set up, over your own network, and keeps everything it needs on your phone.
What the app stores, on your phone only
- Printer connection details: the printer's IP address, serial number and access code. The access code is encrypted with a key held in the Android Keystore.
- Print history: the name, times and outcome of prints the app watched, with a camera snapshot of each.
- Cached files: print job files and timelapse videos fetched from your printer, so they don't have to be downloaded again.
- Settings: your preferences within the app.
None of this leaves your phone. It is removed when you uninstall the app. Leaving demo mode or choosing Forget printer removes the connection details. Timelapses you choose to save go to your phone's Movies folder, where they stay under your control.
Network connections
Layerwatch connects only to the printer whose address you enter: its status service, camera and file storage. Every connection is encrypted, and checked against Bambu Lab's certificates and your printer's serial number. The app has no servers of its own. It contains no analytics, advertising, tracking or crash-reporting code, and it doesn't connect to Bambu Lab's cloud.
Permissions
- Network access and local network access to reach your printer.
- Notifications for print progress and alerts.
- Foreground service (connected device) to keep watching a print in progress after you leave the app. It stops when the print ends.
- User-initiated data transfer to finish timelapse downloads you start, even after you leave the app.
Data sharing
No data is shared with anyone, because no data is collected.
Children
The app is not directed at children and collects no personal information from anyone.
Changes
If this policy changes, the new version will be posted here with a new effective date. The full history is public in the project repository.
Contact
D01 Development · d01.devel@gmail.com · GitHub issues
Layerwatch is an independent project, not affiliated with or endorsed by Bambu Lab.