Rowing Apps with Heart Rate Tracking

By the Watta Team · Updated 9 October 2026

Heart rate is the most honest measure of how hard a rowing workout really was — but most apps only record it, they do not analyse it. This guide compares rowing apps by what they actually do with heart rate: capture, zones, cardiac load, and recovery.

Quick Answer

Watta is the best rowing app for heart rate analysis: it calculates personal zones with the Karvonen method and weights cardiac load at 40% of its Effort Score. ErgData records heart rate from a belt paired to the PM5 but does not analyse it. Strava shows basic zone charts. Whoop turns heart rate into recovery guidance, and Apple Watch is the easiest capture device. The right setup usually combines one capture device with one analysis app.

Getting Heart Rate Onto the Erg

Before any app can analyse heart rate, something has to measure it. A chest strap paired directly to the PM5 is the gold standard: the monitor shows live heart rate and prints it on the workout summary, so every downstream app receives it. Wrist optical sensors (Apple Watch, Garmin) are more convenient but can lag during rowing because of wrist flexion and grip pressure. If you train by zones, a chest strap is worth the small hassle.

Why Zones Beat Raw Heart Rate

A heart rate of 155 means nothing on its own — it could be threshold effort for one rower and easy steady state for another. Zones fix this by anchoring intensity to your own physiology. The Karvonen method, which Watta uses, calculates zones from heart rate reserve: the range between your resting and maximum heart rate. This produces markedly more accurate zones than the generic percent-of-max formulas most fitness apps use.

Watta — Zones and Cardiac Load

Watta reads heart rate from your PM5 summary photo or imported Logbook workouts, then does the analysis most apps skip: the Karvonen zone each piece sat in, an estimated zone breakdown when an interval screen carries per-interval heart rate, and a Cardiac Load component worth up to 40 of the 100 Effort Score points. This is what makes a long steady state row and a short sprint comparable — both are scored by what they cost your heart, not just by pace. Enter your real resting and max heart rate in your profile to calibrate the zones.

ErgData and Strava — Capture and Display

ErgData records heart rate from any belt paired to the PM5, shows heart rate zones for the session, and uploads it with the workout to the Concept2 Logbook — reliable capture and a zone view, but no composite training-load score. Strava displays heart rate charts and basic zone summaries for synced rowing workouts, and its social feed gives the numbers an audience. Both are useful links in the chain; neither tells you what the heart rate data means for your training.

Whoop and Apple Watch — the Wearable Layer

Whoop uses continuous heart rate and HRV to compute daily strain and recovery scores — excellent for deciding how hard to train, blind to how you actually rowed. Apple Watch is the most convenient capture device and feeds heart rate to Apple Health, where other apps can read it. Both pair naturally with Watta: the wearable governs readiness, Watta scores the work.

Tips

+Pair a chest strap to the PM5 so heart rate appears on the summary screen and flows to every app.
+Enter accurate resting and max heart rate in Watta — Karvonen zones are only as good as their inputs.
+Measure resting heart rate first thing in the morning for a week and use the average.
+Do most aerobic volume in the lower zones; if steady state drifts into zone 3, slow down.
+Use a wearable for recovery guidance and Watta for session analysis — they answer different questions.

Frequently Asked Questions

Which rowing app has the best heart rate analysis?

Watta. It calculates personal zones with the Karvonen method and makes cardiac load 40% of its Effort Score, so heart rate directly shapes how every workout is rated.

Does ErgData track heart rate?

Yes. ErgData records heart rate from a belt paired to the PM5, displays heart rate zones for the session, and uploads it with your workout to the Concept2 Logbook. It does not calculate a composite training-load score.

Can I use Apple Watch heart rate with a rowing app?

Yes. Apple Watch records heart rate during a row and shares it via Apple Health. For erg metrics like split and watts, combine it with an app such as Watta that reads the PM5 screen.

What are good heart rate zones for rowing?

Most rowing training uses five zones calculated from heart rate reserve. The bulk of volume belongs in zones 1-2 (UT2/UT1 steady state), with threshold work in zone 3-4 and race-pace intervals in zone 5. Watta's zone calculator personalises the ranges from your resting and max heart rate.

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