Privacy policy — MMM (USB Flex)
This policy describes how the MMM mobile client handles information. MMM is a client for Money Matter (official cloud and self-hosted servers). USB Flex is not the publisher of Money Matter itself.
What the app does
MMM lets you sign in to a Money Matter server, view and manage accounts, transactions, attachments (including receipt photos with on-device OCR), and related finance features exposed by that server’s API.
Data we process
Account and session
- Email and password, or OAuth (e.g. Google / Apple) as offered by your chosen server.
- Session cookies stored on the device to keep you signed in.
Financial data
Transaction amounts, accounts, categories, notes, attachments, and similar data are sent to the Money Matter server you select (cloud or a URL you configure). USB Flex does not operate a separate finance backend for MMM.
Device and diagnostics
- Local preferences (theme, language).
- Standard crash / platform logs on your device.
Receipt photos and OCR (on-device)
Images you share or attach may be processed on the device with ML Kit text recognition. Recognized text may be used to pre-fill a transaction and uploaded to your server as an attachment when you save.
Advertising (MMM free only)
The free app (net.usbflex.mmm) shows Google AdMob banner
ads and may use the advertising ID. AdMob / Google may collect device
and usage data according to
Google’s policies. MMM Pro does not include ads or the advertising ID permission.
Consent for personalized ads in the EEA/UK is collected via Google’s User Messaging Platform (UMP) where required.
Legal pages
- Privacy policy (this document): https://mmm.usbflex.net/privacy
- Account deletion guide: https://mmm.usbflex.net/account-deletion
Data retention and deletion
Financial and account data live on your Money Matter server. To delete your account and server-side data, follow https://mmm.usbflex.net/account-deletion. You can also sign out in the app to clear the local session on this device.
Children
MMM is not directed at children under 13 (or the minimum age in your country).
Changes
We may update this policy. The “Last updated” date at the top will change. Continued use after publication constitutes acceptance of the revised policy.
Third parties
- Money Matter cloud / your self-hosted operator — see their privacy terms.
- Google AdMob / UMP (free app only).
- Google Play services (distribution, ads, ML Kit where applicable).
Legal text is provided in English for store compliance.