Terra
A data aggregator that pulls wearable data from Whoop, Garmin and Fitbit for developers.
- Sensors sample every 5 to 10 minutes
- Syncs with a delay
- Needs a second app open
- Open SDK proved the concept
- Heart rate monitors since 1977
- Co-developed for battery and charging
- Adds accelerometer data
Visible bought Polar sensors wholesale instead of using aggregators
From Visible's wearable data findings
What was said about Terra
Terra suits onboarding personalization, not live alerts. Visible found that wearable aggregators like Terra sync with a delay and need a second app open. That makes them useful for personalizing onboarding from data a user already has, but not for live alerts.
Visible also found it a poor fit for people with brain fog, who are hurt by the delay and the extra app.
Visible picked a hardware partner over aggregator APIs for accuracy. Visible first bought Polar heart rate sensors and used the open SDK to prove the concept, then bought wholesale. It later co-developed a new version for battery life, easier charging and accelerometer data.
API aggregators fell short because the sensors sample every 5 to 10 minutes and require a second app open. Polar has built heart rate monitors since 1977, and 99% of devices can't support real-time heart rate alerts. Quote: "We could never compete with that."
$10M ARR without ever testing a paywall — Luke Martin-Fuller, Visible
Suits personalizing onboarding from existing data but not live alerts, since it syncs with delay and needs a second app open. Visible found it a poor fit for people with brain fog.
Terra suits onboarding personalization, not live alerts. Visible found that wearable aggregators like Terra sync with a delay and need a second app open. That makes them useful for personalizing onboarding from data a user already has, but not for live alerts.
Visible also found it a poor fit for people with brain fog, who are hurt by the delay and the extra app.
Visible picked a hardware partner over aggregator APIs for accuracy. Visible first bought Polar heart rate sensors and used the open SDK to prove the concept, then bought wholesale. It later co-developed a new version for battery life, easier charging and accelerometer data.
API aggregators fell short because the sensors sample every 5 to 10 minutes and require a second app open. Polar has built heart rate monitors since 1977, and 99% of devices can't support real-time heart rate alerts. Quote: "We could never compete with that."
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