# My Unit Conversion vs 3X Calculator

The clearest difference is update cadence: 3X Calculator at weekly against My Unit Conversion's every 12 months. My Unit Conversion's advantage is iOS requirement (8.0 vs 15.0). 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.

My Unit Conversion ships an update every 12 months, 3X Calculator weekly. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | My Unit Conversion | 3X Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Weekly** |
| Monetization | Free | — |
| Size | 37 MB | 25 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mark Timmings](https://appshunter.io/developer/1583590476) | [kuo ching liew](https://appshunter.io/developer/949386569) |

## What reviewers say

### My Unit Conversion

[App page](https://appshunter.io/ios/app/my-unit-conversion/id1600275661)

Easily convert units within various categories like length, mass, and temperature. This free application handles decimal conversions and is ad-free, offering a straightforward utility for everyday needs.

**Highlights:** Unit conversion within categories, Supports decimals, Ad-free experience, Multiple categories supported, Simple and straightforward design

**In-app purchases:** none


### 3X Calculator

[App page](https://appshunter.io/ios/app/3x-calculator/id1618526178)

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

**In-app purchases:** none


## Frequently asked questions

### Is My Unit Conversion free?

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

### Is 3X Calculator free?

3X Calculator is free to download, with no in-app purchases.

### Do My Unit Conversion or 3X Calculator have ads?

Neither My Unit Conversion nor 3X Calculator shows ads.

### Which is updated more often, My Unit Conversion or 3X Calculator?

My Unit Conversion ships an update every 12 months, and 3X Calculator weekly. Most recently, My Unit Conversion was updated on October 24, 2026 and 3X Calculator 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.*