Track your rowing for weight loss — the simple way

By the Watta Team · Updated March 2026

Rowing is one of the most effective exercises for weight loss, engaging 86% of your muscles in a low-impact, high-calorie-burn movement. Watta makes tracking your rowing sessions effortless with AI-powered photo logging, calorie data, and Effort Scores.

Rowing App for Weight Loss: 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

Hard to know if rowing workouts are effective

Without tracking calories, distance, and intensity, it is impossible to know if your rowing sessions are contributing meaningfully to your weight loss goals. Many people row aimlessly without data.

Motivation fades without visible progress

Weight loss from exercise happens gradually. Without a record of sessions completed, distances rowed, and fitness improvements, it is easy to feel like nothing is working and quit.

Calorie estimates from other apps are unreliable

Generic fitness trackers estimate rowing calories based on time and body weight alone. The Concept2 monitor calculates calories from actual power output, which is far more accurate but rarely captured.

How Watta Helps

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Accurate Calorie Tracking

Watta extracts calorie data directly from your Concept2 PM5 screen, which calculates calories from actual power output. Far more accurate than watch-based estimates.

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Effort Score for Consistency

The 0-100 Effort Score gives you a clear target for each session. Aim for consistent scores to build a sustainable exercise habit rather than burning out with unsustainable intensity.

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Streaks & Achievements

Watta rewards consistency with weekly streaks and achievement badges. Stay motivated with tangible milestones as you build your rowing habit for weight management.

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 BeginnersFor Home GymFor Indoor RowingRowing for Weight LossSteady State Rowing GuideCalories (Rowing)Calories on a Concept2 ergometer are calculated from watts (power output), not from heart rate or individual body composition, using a standardised formula.Steady State RowingSteady state rowing is sustained, moderate-intensity ergometer training performed at a consistent pace for extended duration, typically 20-90 minutes at 55-75% of heart rate reserve.Heart Rate Zones (Rowing)Heart rate zones in rowing are five intensity bands calculated from resting and maximum heart rate, used to prescribe and monitor training intensity on the ergometer.Calorie Burn Calculator
Available Now

Every erg counts.

Download Watta and start tracking your workouts today.

Download on the App Store