# Currency Professional vs Shift Unit

The clearest difference is in-app purchases: Shift Unit at none against Currency Professional's 1. Shift Unit also leads on update cadence (every 2 months vs every 5 months) and iOS requirement (16.0 vs 26.0). On price, ads and device support there is nothing between them.

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

Currency Professional ships an update every 5 months, Shift Unit every 2 months. The most recent releases landed on September 8, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Currency Professional | Shift Unit |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 21 MB | 20 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [Didier Burton](https://appshunter.io/developer/1514037982) |

## What reviewers say

### Currency Professional

[App page](https://appshunter.io/ios/app/currency-professional/id1493772243)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertising | $1.99 | one-time |


### 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


## Frequently asked questions

### Is Currency Professional free?

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

### Is Shift Unit free?

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

### Do Currency Professional or Shift Unit have ads?

Neither Currency Professional nor Shift Unit shows ads.

### Which is updated more often, Currency Professional or Shift Unit?

Currency Professional ships an update every 5 months, and Shift Unit every 2 months. Most recently, Currency Professional was updated on September 8, 2026 and Shift Unit on September 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*