# Unit Converter vs UnitDeck

The clearest difference is in-app purchases: Unit Converter at none against UnitDeck's 1. Unit Converter also leads on update cadence (every 2 days vs every 2 weeks) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. UnitDeck sells 1 one-off in-app purchase. Unit Converter asks for nothing beyond the download.

Unit Converter ships an update every 2 days, UnitDeck every 2 weeks. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Unit Converter | UnitDeck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/unit-converter-any-unit/id6758352171/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 32 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [George Corbin](https://appshunter.io/developer/1791667847) | [建辉 刘](https://appshunter.io/developer/6790622804) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-any-unit/id6758352171)

This tool simplifies unit conversions for various measurements like length, weight, and temperature. It offers instant, precise results with a clean interface, making it ideal for students, professionals, and everyday users needing quick calculations.

**Highlights:** Converts length, weight, temperature, time, speed, area, volume, Handles scientific units, Instant and precise results, Clean and easy-to-use interface, Smart calculator for complex problems, Saves time and reduces errors

**Features:** macOS Compatibility

**In-app purchases:** none


### UnitDeck

[App page](https://appshunter.io/ios/app/unitdeck-work-unit-converter/id6792440865)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnitDeck Pro – Lifetime | $3.99 | one-time |


## Frequently asked questions

### Is Unit Converter free?

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

### Is UnitDeck free?

UnitDeck is free to download, with in-app purchases available.

### Do Unit Converter or UnitDeck have ads?

Neither Unit Converter nor UnitDeck shows ads.

### Which is updated more often, Unit Converter or UnitDeck?

Unit Converter ships an update every 2 days, and UnitDeck every 2 weeks. Most recently, Unit Converter was updated on October 21, 2026 and UnitDeck on October 19, 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.*