Comparison

Ergbase Rowing vs Watta

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Ergbase Rowing

This app allows users to capture images of their rowing machine workouts. It then converts these images into searchable data, enabling users to track and improve their performance over time.

Highlights
  • Capture workout images
  • Convert images to searchable data
  • Track rowing performance
  • Improve over time
  • Concept2 machine compatible
Features
Read full description

Capture pictures of your Concept2 rowing machine workouts, and save them on Ergbase. Once uploaded, Ergbase converts your images into searchable data so you can track and improve on the rowing machine over time. *Please note we are not affiliated with Concept2 in any way.

About

Watta

Effortlessly log your rowing, biking, and skiing workouts by simply taking a photo of your machine's screen. AI automatically extracts your performance data, organizing it into a comprehensive training log. Connect with your club, compete on leaderboards, and share your progress with teammates.

Highlights
  • AI photo data extraction
  • Automatic workout logging
  • Support for Concept2 monitors
  • Manual workout entry
  • Training history and trends
  • Club and squad features
  • Leaderboards and competition
Features
Read full description

Photograph your Concept2 monitor after a piece and Watta logs the whole workout. No typing, no cables, no pairing needed. Every session is scored 0–100 and kept in your training log. SNAP YOUR ERG. WATTA LOGS IT. Take a photo of the PM5 summary screen, or pick one from your camera roll. Watta reads distance, time, average split, stroke rate and every interval, plus watts, heart rate, calories and drag factor when the monitor shows them. You check the numbers before anything is saved. Photograph several screens (summary, splits, heart rate) and Watta reads them as one workout. EVERY SESSION SCORED 0–100 The Effort Score rates how hard you really worked, from four parts: • Cardiac Load: your average heart rate against your heart-rate reserve • Work Output: watts and duration, scaled for your body weight • Pacing: how even your splits were • Economy: watts per stroke Zones: Recovery, Building, Training and Peak. HEART RATE ZONES Pair a strap to the PM5 so heart rate shows on the screen, and Watta labels each piece by zone using your resting and max heart rate. YOUR WHOLE TRAINING LOG Every workout in one place, with personal bests for every standard distance on each machine, progress charts, streaks and achievement badges. Import the sessions you upload to the Concept2 Logbook. NEW: SEND WORKOUTS TO YOUR PM5 Got a PM5? Build a workout in Watta (a 2k test, an interval set, a steady piece), save it to your workout library, and tap Start on my PM5. Watta sets it up on the monitor over Bluetooth, ready to row. Then snap the screen when you're done. COACHING Coaches keep a library of sessions, build training plans of up to 12 weeks, and send them to individual athletes or a whole boat. Athletes accept a session, row it, snap the result and mark it done, and the coach sees how it went against the plan. Invite rowers by email or with a crew code, even before they have Watta. CLUBS AND SQUADS Join your club with an invite code, train with your squad, see their workouts in your feed, and compare on club and squad leaderboards. BUILT FOR CONCEPT2 Works with the RowErg, SkiErg and BikeErg, on PM5, PM4 and PM3 monitors. Sending workouts over Bluetooth needs a PM5. Photos of other brands of rower aren't read automatically, so enter those sessions by hand. Free to download. Every erg matters. Watta is a training log, not a medical device. Talk to your doctor before starting a new exercise programme.

Screenshots

Ergbase Rowing4 screens
Watta4 screens

Verdict

The call

Ergbase Rowing and Watta are too close to call on the numbers: across 7 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Ergbase Rowing ships an update every 10 days, Watta every 2 weeks. The most recent releases landed on October 2, 2026 and October 24, 2026 respectively.

ScorecardNo meaningful differences
Ergbase Rowing versus Watta: the parameters behind the verdict, then further details
ParameterErgbase RowingWatta
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 10 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size25 MB37 MB
Age rating4+4+
DeveloperStuart SimSTEPHEN CHRISTOPHER MILTON

Customer experience

Ergbase Rowing

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Watta

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Ergbase Rowing

No in-app purchases

None

Watta

No in-app purchases

Questions

Is Ergbase Rowing free?
Ergbase Rowing is free to download, with no in-app purchases.
Is Watta free?
Watta is free to download, with no in-app purchases.
Do Ergbase Rowing or Watta have ads?
Neither Ergbase Rowing nor Watta shows ads.
Which is updated more often, Ergbase Rowing or Watta?
Ergbase Rowing ships an update every 10 days, and Watta every 2 weeks. Most recently, Ergbase Rowing was updated on October 2, 2026 and Watta on October 24, 2026.

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