Open Wearables

The software studio Momentum developed Open Wearables to eliminate the recurring per-user fees and privacy compromises typical of commercial health data aggregators. Created to unify fragmented biometric platforms under a single self-hosted roof, it gives individuals and small teams direct control over their device pipelines. That heritage means deployments operate as private hubs where sensitive fitness logs stay entirely on user-controlled hardware.

Why Open Wearables instead of Terra API

Terra API operates as a hosted multitenant service where developers pay recurring subscriptions based on connected user volume. Open Wearables replaces that managed broker model with an on-premises stack packaged for Docker, pairing a Python FastAPI backend with PostgreSQL, Redis, and Celery task queues. Instead of routing personal heart rates, sleep stages, and workout logs through third-party servers, all biometric synchronization happens directly between device webhooks or mobile bridges and your private database.

That operational sovereignty introduces clear maintenance responsibilities. Terra API handles developer program agreements and rate limits across hardware manufacturers behind the scenes. With Open Wearables, operators must register directly with device portals such as Garmin, Polar, Suunto, and Whoop to secure their own OAuth credentials and production API quotas. You also manage server updates, storage backups, and background queue health without external support. For privacy-conscious runners, independent trainers, and health organizations seeking predictable hosting costs, that administrative effort pays off in complete ownership of every health metric.

What it does well

• Web management dashboard: An administrative browser portal displays connected individuals, active sync status, and recent health data points without command-line tools.
• Shareable connection links: Coaches and administrators can generate onboarding links to send via messaging or email, letting participants link fitness accounts through a standard browser.
• Standardized health metrics: Activity logs, sleep stages, resting pulse, and step counts convert into uniform schemas across supported devices, removing manual format translation.
• Local data privacy: Database storage resides on your private server, shielding biometric histories from third-party advertising brokers and unexpected terms changes.