Ergometer Space vs SquareWave
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Ergometer Space
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Ergometer rowing app for concept2 PM5 The app support blue tooth for PM5. Features - Create your own dashboard with values and gauges and other widgets - Row together over the internet. (Alone or as a team) * See each other and projected positions * Publish a high score * Chat using text * Traffic light * login as observer to watch a race and collect the end times. * Row together as one team and race against other teams - Row in 3d or using an VR headset. - You can load your own map with a predefined course and show your rowing position on the map. - View your power curve and compare it with an base curve - Make your own base curve - View history of your race - Row stroke advisor which bases is based on the user defined base curve. - Get warnings when user defined stroke value limits are exceeded - Plugins (which you can create using the ergometer space website) - Share your power curve with other users. This way you can your train together over the internet. - Ad free and your data stays private. (this app is made for fun, not for making money) - Record an replay of all the ergometer data plus an optional video. The import/export function allows you to give this data to a coach for further analysis. - Test your condition in the 3d shark game - Spark lines in the value widgets to quickly see trends. - Connect to a blue tooth heart rate device or include the heart rate data from the concept2 performance monitor. - Show your heart rate as percentage of the total max rate or as graph in a heart rate zone widget. The zones and max heart rate are configurable. More information: https://tijmenvangulik.github.io/Ergometerspace/ You can also try the application online https://ergometer-space.org Some platforms have more features than the other (for example some have usb support). To help you make your choice: https://tijmenvangulik.github.io/Ergometerspace/FeatureTable.html
SquareWave
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Square Wave is a focused, private interval timer for HIIT, Tabata, circuits, stretching, study sessions, and any routine built around work and rest. SET YOUR TIMER ⢠Choose work and rest durations ⢠Configure sets, rounds, and round breaks ⢠Save favorite timer presets for quick reuse ⢠See the total session time before you start FOLLOW THE WAVE Work is the high line. Rest is the low line. The live square wave makes the entire interval pattern easy to understand at a glance. ⢠Large, readable countdowns ⢠Pause or skip forward and back with one tap ⢠Clear countdown, transition, and halfway cues ⢠Optional sound and haptic feedback ⢠Continues when the screen is locked APPLE WATCH Bring Square Wave to your wrist with the included Apple Watch app. ⢠Start timers from presets synced with iPhone ⢠Hear audio cues and feel haptic taps at each interval ⢠Keep timing active when your wrist is down with workout support ⢠Save completed workouts to Health and sync sessions back to iPhone MUSIC FRIENDLY Timer cues mix with Spotify and other audio instead of stopping your music. PRIVATE BY DESIGN No ads. No accounts. No subscriptions. No tracking. Square Wave works offline, and your saved timers stay on your device.
Screenshots
Verdict
The clearest difference is iOS requirement: Ergometer Space at 11.0 against SquareWave's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Ergometer Space ships an update every 6 days, SquareWave every 4 days. The most recent releases landed on September 6, 2026 and September 10, 2026 respectively.
| Parameter | Ergometer Space | SquareWave |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days | Every 4 days ā better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod ā better | iPhone, Apple Watch |
| Requires iOS | 11.0 ā better | 26.0 |
| Further details ā not scored | ||
| Size | 64 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Tijmen van Gulik | XYK LLC |
In-app purchases
Ergometer Space
No in-app purchases
SquareWave
No in-app purchases
Questions
Is Ergometer Space free?
Is SquareWave free?
Do Ergometer Space or SquareWave have ads?
Which is updated more often, Ergometer Space or SquareWave?
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