Thoughtful, focused mobile tools that work without an account.
For help with Kerf, Relay, Cadenza, Keepwell, Milemark, Folio, Crumb, Pocketplan, Purl, Goldenhour, Replay, Seedling, Harbor, Papertrail or Wayfarer, email channelgrowthhub@gmail.com.
Effective 17 September 2026
Lumicore Studio does not require an account and does not operate an advertising or analytics system in these apps. App records and imported files are stored on your device. They leave your device only when you choose an operating-system share, export, print, backup or file-picker action.
Network access. Crumb accesses a public HTTPS recipe URL only when you ask it to import a recipe. The other apps are designed for offline use, apart from operating-system services and platform components.
Photos, documents, audio and video. Apps that let you choose media use the system picker or camera after your action. Papertrail uses Google ML Kit to recognise text on selected images. Processing is performed through the app's installed mobile components; Lumicore Studio does not receive your documents, media or recognised text.
Purchases. Google Play processes paid downloads. Lumicore Studio does not receive full payment-card details. Google may provide transaction and diagnostic information under its own privacy policy.
Retention and deletion. Local records remain until you delete them or uninstall the app. Exported files remain wherever you save or share them. You can erase app data through Android settings.
Children. These general-purpose productivity tools are not directed to children under 13.
Contact. Questions or deletion requests for information you intentionally sent by email can be sent to channelgrowthhub@gmail.com.