Terra API

Avinash Sukhwani and Kyriakos Eleftheriou looked at the health data landscape and saw chaos—500+ wearables and health apps all speaking different languages, each with its own API, its own data format, its own headaches. Developers were spending months building integrations just to get basic health data. So they built Terra API, the unified backend that connects to Garmin, Fitbit, Apple Health, Google Fit, Oura, WHOOP, Strava, Withings, Samsung Health, and 50+ more providers through a single integration. One API call, every device covered.

Here's why it matters: health data is the wild west. Your fitness watch has one format, your sleep tracker has another, your CGM sensor has yet another. Terra normalizes all of it—activity, sleep, nutrition, heart rate, HRV, VO2max, body metrics, menstrual cycles, continuous glucose monitoring—into one clean API. They're HIPAA compliant and SOC 2 certified, which means hospitals, insurance companies, and clinical researchers actually trust them with real medical data. That's not a toy product—that's infrastructure. Founded in 2020 and based in Madrid, Terra is the plumbing that powers the entire digital health ecosystem.