Help & FAQ

Watta is a rowing training log app that lets you capture workout data by photographing your Concept2 erg screen. Watta analyses your workouts and gives you an Effort Score so you can track your training load over time.

Tap the + button, take a photo of your erg screen (or choose one from your camera roll), review the extracted data, and tap Save Workout. The app reads the data from your photo automatically, and you can edit any value before saving. You can also skip the photo entirely and enter data manually.

The Effort Score (0-100) measures how hard your workout was, personalised to you. It combines Cardiac Load (heart rate intensity, when available), Work Output (power and duration adjusted for your body size), Pacing (a consistency bonus for even or negative splits), and Economy (stroke efficiency). Scores fall into four zones: Recovery (0-25), Building (26-50), Training (51-75), and Peak (76-100).

Your score is calculated using your profile data: age, weight, height, max heart rate, and resting heart rate. A 2:00 split means different things for different people — Watta adjusts for that. Keep your profile up to date in Profile → Edit Profile for the most accurate scores.

No, but it helps. Without heart rate data, Watta estimates your cardiac load from power output. With heart rate data, your Effort Score is more accurate and you unlock full Heart Rate Analysis.

The app uses AI to read your erg screen photo, and it can make mistakes — especially if the photo is blurry or at an angle, there is glare on the screen, or the screen shows many numbers at once. Always review the extracted data before saving; you can tap any field to edit it.

Yes. Go to Workouts, tap the workout, then tap Edit to change any value or Delete to remove it.

Distance pieces (for example 2000m or 5000m), time pieces (for example 10:00 or 30:00), and interval sessions (for example 7×500m or 4×1000m). Watta supports the RowErg, SkiErg, and BikeErg.

Yes. Tap +, choose Manual Entry, and type in your data.

Split is your pace per 500m (for example 1:55.0/500m). Time is the total workout duration (for example 20:00.0). If your split is 2:00 and your distance is 2000m, your total time is 8:00.

When you log heart rate data, Watta provides additional insights: Intensity (what percentage of your max heart rate you worked at), Zone (which training zone you were in), Efficiency (watts produced per heartbeat), and Cardiac Drift (how much your heart rate rose during the session — a fatigue indicator).

Watta calculates personalised zones using the Karvonen method (heart rate reserve): Z1 Recovery (very easy, could chat), Z2 Aerobic (comfortable, breathing steady), Z3 Tempo (challenging, short sentences), Z4 Threshold (hard, only a few words), and Z5 Max (all out, cannot talk). Zones are based on the max and resting heart rate in your profile.

Watta reads heart rate from your erg screen photo when it is displayed — pair your heart rate monitor with the PM5 and it appears on screen. You can also enter your average heart rate manually when reviewing a workout.

Go to the Clubs area, search for your club name, and tap Request to Join (or enter your club invite code). A club admin then approves your request.

Go to the Clubs area, tap Create Club, enter your club name, location, and description, and submit. New clubs start as pending until verified by the Watta team.

A club is your rowing club (for example "London Rowing Club"). A squad is a group within your club (for example "Women's Squad" or "Novices"). You can be in one club but multiple squads.

You control workout visibility: private workouts are visible only to you, while public workouts can appear in your club, squad, and followers' feeds and on leaderboards. Visibility is set per workout, and your profile privacy settings control what club members can see.

Only with your consent. Coaching in Watta is built on a mutual invite: you and your coach connect from the Profile screen, and you choose whether the coach sees your full workout history or only the workouts attached to their assignments. You can change or revoke this at any time.

Tap the + button to open Add Workout, choose Share to Strava, then log in to Strava and authorise Watta. Once connected, your workouts appear in your Strava feed as rowing activities.

Go to Add Workout, tap Share to Strava, and choose Disconnect.

Yes. Workouts you record with ErgData sync to your Concept2 Logbook, and Watta can import them from there. Tap the + button, choose Import from ErgData, and authorise Watta with your Concept2 Logbook account. Your workout history imports automatically, and new workouts flow in each time you open the app.

Go to Add Workout, tap Import from ErgData, and choose Disconnect. Workouts already imported are kept.

Go to Settings and use Reset Password — we email you a secure link to set a new one. If you signed up with Apple or Google, your login is managed by that provider instead.

Go to Profile → Edit Profile. Keeping this up to date improves your Effort Score accuracy.

Go to Settings → Delete Account. This permanently deletes your account, removes all your workout data within 30 days, and removes you from any clubs. This cannot be undone.

Yes. Watta is free to download and use — logging workouts, the Effort Score, heart rate analysis, clubs, and squads are all included.

In summary: account info (email, name), profile data (age, weight, height, heart rate), workout data (distance, time, split, heart rate), and usage analytics if you consent. See our Privacy Policy at getwatta.com/privacy for full details.

No. We never sell your personal data to third parties.

We keep your data while your account is active. If you delete your account, we delete your data within 30 days.

Email privacy@polarindustries.co with your request. We respond within 30 days.

Make sure the photo is clear and well-lit, avoid glare on the erg screen, and take the photo straight-on rather than at an angle. Then try again — AI isn't perfect. You can always enter the data manually instead.

Close and reopen the app, check for updates in the App Store or Play Store, and restart your phone. If it keeps happening, email support@polarindustries.co with your device model and OS version.

Check that your profile is up to date — age, weight, max heart rate, and resting heart rate all feed the score. Also check the workout data itself (distance, time, split) was read correctly from the photo.

Check your email and password are correct, tap Forgot Password to reset, and check your internet connection. If you're still stuck, email support@polarindustries.co.

Check your spam or junk folder and add support@polarindustries.co to your contacts. Verification and password reset emails can take a minute or two to arrive.

Email support@polarindustries.co — we aim to respond within 48 hours.

Email support@polarindustries.co. For bugs, include what happened, what you expected, your device and OS version, and screenshots if possible. Feature ideas are always welcome.

Watta is made by Polar Industries Ltd, based in the United Kingdom (9 Park Lane Business Centre, Langham CO4 5WR).