# ErgRace Online vs Fatometer

The clearest difference is update cadence: Fatometer at every 3 weeks against ErgRace Online's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

ErgRace Online ships an update every 2 months, Fatometer every 3 weeks. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ErgRace Online | Fatometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (13 ratings)](https://appshunter.io/ios/app/ergrace-online/id1509799588/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 61 MB | 60 MB |
| Requires iOS | 16 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Concept2, Inc.](https://appshunter.io/developer/446481798) | [SPIKE FLOW](https://appshunter.io/developer/1834142325) |

## What reviewers say

### ErgRace Online

[App page](https://appshunter.io/ios/app/ergrace-online/id1509799588)

Participate in organized online races using your Concept2 ergometer from anywhere in the world. Compete in individual or team events for time, distance, or calories, with live race displays and online results. Requires a PM5 monitor and competition code.

**Highlights:** Online erg races worldwide, Supports RowErg, SkiErg, BikeErg, Individual and team races, Races by time, distance, or calories, Live race display, Online results, Concept2 Logbook integration

**Features:** Vision Pro support

**In-app purchases:** none


### Fatometer

[App page](https://appshunter.io/ios/app/fatometer/id6751233624)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ErgRace Online free?

ErgRace Online is free to download, with no in-app purchases.

### Is Fatometer free?

Fatometer is free to download, with no in-app purchases.

### Do ErgRace Online or Fatometer have ads?

Neither ErgRace Online nor Fatometer shows ads.

### Which is updated more often, ErgRace Online or Fatometer?

ErgRace Online ships an update every 2 months, and Fatometer every 3 weeks. Most recently, ErgRace Online was updated on October 4, 2026 and Fatometer on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*