Observed arrival · 2026-09-20
Belter, the treadmill app that refuses the subscription treadmill
A privacy-minded Bluetooth app for sharing a household treadmill, tracking walks, running interval programmes, and exporting workout data.
- For
- Households sharing a DeerRun X20 treadmill
- Worth noticing
- The app was verified against a real DeerRun X20 over its Bluetooth protocol, not only against documentation.
Field notes
The project targets the awkward gap between inexpensive Bluetooth treadmills and subscription-heavy companion apps. Its stated data model is deliberately local: no account, server, or analytics, with complete session history and CSV export kept on the phone. Compatibility is narrow rather than assumed; the site reports verification against a DeerRun X20 and marks other PitPat-compatible machines as untested. The product is still in testing and has not reached the App Store.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue