Does Watta adjust for body weight?

Yes. The Effort Score algorithm includes a body weight factor based on the Concept2 weight adjustment formula. This ensures your Work Output score reflects your power relative to your body mass, which is especially relevant for lightweights.

Can I track 2K test results over time?

Yes. Watta logs every 2K piece and tracks your personal best. You can review your 2K history to see split trends, Effort Scores, and stroke rate patterns over time.

Is Watta useful during the lightweight racing season?

Yes. Use Watta to log every training session during your season, monitor training load with Effort Scores, and ensure you are peaking at the right time without overreaching.

Performance tracking that respects the lightweight category

By the Watta Team · Updated March 2026

Lightweight rowing demands precision in training and body management. Watta provides AI-powered erg logging with Effort Scores that incorporate body weight adjustments, giving you a fairer picture of your true output relative to your weight class.

Rowing App for Lightweight 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

Raw splits ignore weight-class context

A 1:42 split means something different at 75kg than at 90kg. Most tracking tools display raw pace without any weight adjustment, making it difficult for lightweights to accurately gauge their relative performance.

Training during weight management periods is stressful

Managing training load while controlling weight requires precise data. Without objective intensity tracking, lightweights risk either under-training (fearing calorie burn) or overtraining (ignoring fatigue signals).

Limited lightweight-specific resources

Most rowing apps and communities cater primarily to heavyweights and open-weight athletes. Lightweight rowers often lack context-appropriate benchmarks and training guidance.

How Watta Helps

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Weight-Adjusted Effort Scores

Watta's Work Output component uses the Concept2 weight adjustment formula, so your Effort Score reflects your power output relative to body weight. A fair measure for lightweight athletes.

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AI-Powered OCR

Photograph your PM5 screen after every piece. Watta extracts splits, distance, stroke rate, and intervals automatically. No manual data entry required.

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Personal Best Tracking

Track PBs across all standard erg distances. Monitor how your performance evolves across training blocks and competition cycles.

How It Works

Snap your erg screen

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

AI extracts your data

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

Get your Effort Score

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