Give your trainer the erg data they need
By the Watta Team · Updated March 2026
When rowing is part of your training programme, your PT needs to see how hard you worked — not just that you spent 20 minutes on the erg. Watta logs your sessions with AI-powered OCR, calculates an Effort Score that captures true intensity, and lets you share everything with your trainer through clubs and squads.
The Problem
Sharing erg data with your trainer is awkward
Taking screenshots, sending WhatsApp photos, or trying to remember your splits during your next PT session is unreliable. Trainers need structured, accessible data — not blurry photos in a chat thread.
No way to track rowing alongside other training
Rowing is often one component of a broader training programme. Most rowing apps exist in isolation, making it hard for your trainer to see how erg sessions fit within your overall training load.
Generic metrics do not tell your PT what they need to know
Telling your trainer you rowed 5,000 metres at a 2:10 split says little about the session quality. Without heart rate, pacing consistency, and effort context, your PT cannot programme your next sessions effectively.
How Watta Helps
Share Workouts via Clubs & Squads
Your trainer creates a club or squad on Watta, and your logged sessions appear in their feed automatically. No screenshots, no chasing — your PT sees every workout as soon as you log it.
Effort Score for Session Quality
The 0-100 Effort Score gives your trainer a single number that captures the true intensity of your rowing session — combining cardiac load, work output, pacing, and economy. It is the quickest way for a PT to assess how you trained.
Heart Rate Zone Data
Watta shows which heart rate zone you spent your session in, using Karvonen-calculated zones personalised to your age and resting heart rate. Your PT can verify you trained at the right intensity.
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.
Watta is Available Now
Download Watta and start tracking your workouts today.
Download on the App StoreFrequently Asked Questions
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Every erg counts.
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