# Unit converter vs All Units Convertor

The clearest difference is in-app purchases: Unit converter at none against All Units Convertor's 2. Unit converter also leads on ratings volume (14 vs 1). All Units Convertor's advantage is update cadence (fortnightly vs every 24 months) and iOS requirement (13.0 vs 15.6). On price, rating, ads and device support there is nothing between them.

Both are free to download. All Units Convertor sells 2 one-off in-app purchases. Unit converter asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Unit converter against 5.0 for All Units Convertor. That said, the two scores are not equally well evidenced: Unit converter has 14 ratings behind it against 1, so its average is the more settled of the two.

Unit converter ships an update every 24 months, All Units Convertor fortnightly. The most recent releases landed on June 4, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Unit converter | All Units Convertor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (14 ratings)](https://appshunter.io/ios/app/unit-converter-convert-unit/id1582803086/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/all-units-convertor/id1611287048/reviews)** |
| Number of ratings | **14** | 1 |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 24 months | **Fortnightly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 7 MB | 11 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Deepak Jalwa](https://appshunter.io/developer/1809904290) | [恒卓 刘](https://appshunter.io/developer/509484187) |

## What reviewers say

### Unit converter

[App page](https://appshunter.io/ios/app/unit-converter-convert-unit/id1582803086)

This application offers a straightforward and efficient way to convert various units. It features a simple interface for quick conversions and allows users to save their conversion history for future reference.

**Highlights:** Simple unit conversion, Quick conversion tool, Save conversion history, Intuitive UI, Elegant design

**Features:** macOS Compatibility

**In-app purchases:** none


### All Units Convertor

[App page](https://appshunter.io/ios/app/all-units-convertor/id1611287048)

Easily convert between various units of measurement, including currency, length, mass, and temperature. Features real-time currency exchange rates and a clean, intuitive interface for quick conversions.

**Highlights:** Supports 10 common unit types, Real-time currency exchange rates, Clear, at-a-glance conversions, iOS system UI compatibility, Converts currency, energy, length, temperature, mass, angle, time, area, bytes, force, volume, torque

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一杯可乐 | $0.99 | one-time |
| 一杯咖啡 | $1.99 | one-time |


## Frequently asked questions

### Is Unit converter free?

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

### Is All Units Convertor free?

All Units Convertor is free to download, with in-app purchases available.

### Which has better reviews, Unit converter or All Units Convertor?

All Units Convertor is rated higher. Unit converter averages 4.9 out of 5 from 14 ratings, while All Units Convertor averages 5.0 from 1 ratings.

### Do Unit converter or All Units Convertor have ads?

Both Unit converter and All Units Convertor show ads.

### Which is updated more often, Unit converter or All Units Convertor?

Unit converter ships an update every 24 months, and All Units Convertor fortnightly. Most recently, Unit converter was updated on June 4, 2026 and All Units Convertor on September 11, 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.*