# Shift Unit vs Unit Converter

The clearest difference is in-app purchases: Shift Unit at none against Unit Converter's 3. Unit Converter's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Unit Converter sells 3 in-app purchases, starting at $0.99 per month. Shift Unit asks for nothing beyond the download.

Shift Unit ships an update every 2 months, Unit Converter every 2 weeks. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Shift Unit | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (21 ratings)](https://appshunter.io/ios/app/shift-unit/id1514037983/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 20 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Didier Burton](https://appshunter.io/developer/1514037982) | [Michiel de Gooijer](https://appshunter.io/developer/1849863849) |

## What reviewers say

### Shift Unit

[App page](https://appshunter.io/ios/app/shift-unit/id1514037983)

This utility app offers precise unit and currency conversions with over 1400 units across 34 categories. It supports light/dark modes, home widgets, and an independent Apple Watch app. Features include a custom keypad with calculator mode and educational Wikipedia integration.

**Highlights:** 1400+ conversion units, 34 categories, Light/dark mode support, Home widget, Apple Watch app, Custom keypad with calculator, Wikipedia integration

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-pro/id6758503595)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $3.99 | per year |
| Small Tip | $0.99 | one-time |


## Frequently asked questions

### Is Shift Unit free?

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

### Is Unit Converter free?

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

### Do Shift Unit or Unit Converter have ads?

Neither Shift Unit nor Unit Converter shows ads.

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

Shift Unit ships an update every 2 months, and Unit Converter every 2 weeks. Most recently, Shift Unit was updated on October 8, 2026 and Unit Converter on October 7, 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.*