7 Best Terra API Alternatives in 2026

Terra itself, on the numbers each vendor publishes. Its documentation enumerates roughly 90 direct server-to-server connections, more than any alternative on this page reaches directly. If breadth of direct cloud coverage is your deciding factor, the honest answer is to stay.

It depends whether you need scoring. Terra Quick Start is $399/mo billed annually and Health Scores are an add-on from $499/mo, so a team that needs scoring is comparing $898/mo or more. Sahha Starter is $299/mo for 1,000 users with every score, biomarker and archetype included. Open Wearables has no licence fee at all, if you can run it yourself.

Open Wearables is MIT-licensed with no per-user fee, but you host and operate it, so the cost moves from a subscription to engineering time and on-call. Sahha is free for 30 days with 25 development users, then $299/mo. Terra has no free plan; its entry tier carries a 30-day money-back guarantee instead.

Sahha scores sleep, activity and mental wellbeing from phone signal alone. Terra reads Apple Health and Health Connect too, so it ingests phone data either way, but its documentation states no score computes from step count alone and that a score will not be generated or may return as null without its required inputs.

Two things. Re-consent, but only where Terra registered the provider connection under its own developer account: Sahha runs on accounts you create and own, so any authorization you already hold moves with you, and phone permissions carry over regardless because HealthKit and Health Connect grant to your app rather than the SDK inside it. The other is score discontinuity, since different models produce different numbers and any trend chart you already show will step at the switch.

Yes, and it is usually the cheaper path if a contract still has months to run. Point new signups at the new provider while existing connections keep running on Terra, and let attrition move the rest across.