Know your body. Find your range.
Go far. Understand more. Live freely. We build heart-signal tools for people who train outdoors and want the real measurement — not a smoothed-over number.
See ECG Recorder What we're buildingTwo right now. Each one does a single job properly instead of a dozen jobs approximately.
A recorder, not a dashboard. Pair a Polar H10 chest strap and capture a real single-lead ECG alongside beat-to-beat RR intervals — then zoom from the whole session down to a single heartbeat, mark what matters, and export it for analysis.
Journey-based safety for people who head out alone. You say where you're going and when you expect to be back; if you don't check in, the people you chose hear about it. Built for the ride where cell service is a rumor.
More detail when it's closer.
An optical wrist sensor gives you an estimate. A chest strap's ECG gives you the waveform every other number is derived from. We start there, and we show you the waveform so you can judge it for yourself.
No account. No cloud sync. No analytics SDK. Sessions are written to your device, and they leave it only when you choose to share or export them.
Some measurements only mean something under the right conditions. When a reading isn't trustworthy yet, our apps say so rather than showing you a confident-looking number.
ECG Recorder goes to the App Store first. If you want to hear when it lands, email us and we'll add you to the list — nothing else, no newsletter.