# All unit converter calculator vs UnitEngConverter

The clearest difference is ads: UnitEngConverter at none against All unit converter calculator's shown. All unit converter calculator's advantage is update cadence (every 3 months vs every 13 months) and iOS requirement (11.0 vs 16.0). On price, 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.

All unit converter calculator ships an update every 3 months, UnitEngConverter every 13 months. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | All unit converter calculator | UnitEngConverter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 13 months |
| Size | 13 MB | 4 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Merbin Joe](https://appshunter.io/developer/1281696078) | [Irfan Uruci](https://appshunter.io/developer/1761565214) |

## What reviewers say

### All unit converter calculator

[App page](https://appshunter.io/ios/app/all-unit-converter-calculator/id1587485769)

**Features:** macOS Compatibility

**In-app purchases:** none


### UnitEngConverter

[App page](https://appshunter.io/ios/app/unitengconverter/id6651829579)

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

**In-app purchases:** none


## Frequently asked questions

### Is All unit converter calculator free?

All unit converter calculator is free to download, with no in-app purchases.

### Is UnitEngConverter free?

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

### Do All unit converter calculator or UnitEngConverter have ads?

All unit converter calculator shows ads; UnitEngConverter does not.

### Which is updated more often, All unit converter calculator or UnitEngConverter?

All unit converter calculator ships an update every 3 months, and UnitEngConverter every 13 months. Most recently, All unit converter calculator was updated on November 7, 2026 and UnitEngConverter on November 4, 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.*