# Unit Converter vs ErgSpeed Rowing Logbook

The clearest difference is in-app purchases: Unit Converter at none against ErgSpeed Rowing Logbook's 3. Unit Converter also leads on device support (3 vs 1) and iOS requirement (11.0 vs 26.0). ErgSpeed Rowing Logbook's advantage is update cadence (every 9 days vs every 28 months). On price, review sentiment and ads there is nothing between them.

Both are free to download. ErgSpeed Rowing Logbook sells 3 in-app purchases, starting at $5.99 per month. Unit Converter asks for nothing beyond the download.

Unit Converter ships an update every 28 months, ErgSpeed Rowing Logbook every 9 days. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Unit Converter | ErgSpeed Rowing Logbook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/unit-converter-utility-app/id1187153449/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 9 days** |
| Monetization | **Free** | Freemium |
| Size | 30 MB | 4 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | +4 |
| Developer | [Dipen Patel](https://appshunter.io/developer/352249653) | [Sports Stats Limited](https://appshunter.io/developer/1481193925) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-utility-app/id1187153449)

Easily convert measurements between various units with a clean and intuitive interface. Supports over 20 categories including length, mass, temperature, and volume.

**Highlights:** Converts between units, Supports 20+ categories, Clean interface design, Intuitive navigation, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


### ErgSpeed Rowing Logbook

[App page](https://appshunter.io/ios/app/ergspeed-rowing-logbook/id6447811175)

Log and analyze indoor rowing workouts with detailed metrics, powerful calculators, and visual progress tracking. Features include AI-powered data scanning, performance charts, and race planning tools to help you train smarter and achieve your goals.

**Highlights:** Log rowing workouts with detailed metrics, Calculate target splits for any distance/time, AI-powered data scanning from monitors, Performance charts and activity heatmap, Year in Pixels training visualization, Power profile analysis, Race planner with segment splits

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $5.99 | per month |
| Yearly Subscription | $29.99 | per year |
| Lifetime Access | $59.99 | one-time |


## Frequently asked questions

### Is Unit Converter free?

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

### Is ErgSpeed Rowing Logbook free?

ErgSpeed Rowing Logbook is free to download, with in-app purchases available.

### Do Unit Converter or ErgSpeed Rowing Logbook have ads?

Neither Unit Converter nor ErgSpeed Rowing Logbook shows ads.

### Which is updated more often, Unit Converter or ErgSpeed Rowing Logbook?

Unit Converter ships an update every 28 months, and ErgSpeed Rowing Logbook every 9 days. Most recently, Unit Converter was updated on October 11, 2026 and ErgSpeed Rowing Logbook on October 24, 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.*