The rowing app that actually understands rowing

By the Watta Team · Updated March 2026

Watta uses AI to extract your workout data from Concept2 screen photos. No manual entry, no clunky interfaces — just snap, track, and train smarter with Effort Scores that capture what split time alone cannot.

Rowing App for Rowers: Watta is a free, AI-powered rowing workout tracker. Snap your erg screen to capture data instantly. Get a 0-100 Effort Score combining cardiac load, work output, pacing, and economy. Track heart rate zones via the Karvonen method. Join clubs and squads to train with your crew.

The Problem

Manual workout logging is tedious

Most rowers abandon training logs because entering splits, stroke rate, distance, and intervals by hand after every session is a chore. Important data gets lost or never recorded.

Split time alone does not tell the full story

A 2:00 split at rate 18 is fundamentally different from a 2:00 split at rate 28. Without factoring in stroke rate, heart rate, and workout context, raw pace gives an incomplete picture of effort and fitness.

No single app connects erg, social, and progress

Rowers juggle Concept2 Logbook for metres, Strava for social sharing, and spreadsheets for training plans. There is no unified place to log, analyse, and share erg sessions.

How Watta Helps

📸

AI-Powered OCR Logging

Take a photo of your Concept2 PM5 screen and Watta extracts split, distance, stroke rate, time, and intervals automatically. Your workout is logged in seconds.

🎯

Effort Score Algorithm

A proprietary 0-100 score that combines cardiac load, work output, pacing, and stroke economy. Finally, a single number that captures the true intensity of every session.

👥

Social Feed & Clubs

Share workouts with your rowing community, join clubs, follow teammates, and compare sessions. Built for the way rowers actually train — together.

How It Works

1

Snap your erg screen

Take a photo of your PM5 display after your workout. Gallery upload works too.

2

AI extracts your data

Watta reads every metric — time, split, distance, stroke rate, heart rate, and calories.

3

Get your Effort Score

A 0-100 score combining cardiac load, work output, pacing, and economy shows exactly how hard you worked.

Watta is Available Now

Download Watta and start tracking your workouts today.

Download on the App Store

Frequently Asked Questions

Related Content

For Competitive RowersFor Indoor RowingFor Concept2 Users2K Rowing Test GuideErg Technique GuideSplit TimeSplit time is the pace expressed as the time it takes to row 500 metres on an ergometer, displayed in minutes and seconds (e.g. 2:00.0/500m).Stroke RateStroke rate (also called strokes per minute or SPM) is the number of complete rowing strokes performed in one minute on an ergometer.Watts (Rowing)Watts in rowing measure the power output on an ergometer, calculated from the pace using the Concept2 formula: Watts = 2.80 / pace³.Effort Score Calculator
Available Now

Every erg counts.

Download Watta and start tracking your workouts today.

Download on the App Store