# Currency transformer vs One US Dollar

The clearest difference is ads: Currency transformer at none against One US Dollar's shown. Currency transformer also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). One US Dollar's advantage is update cadence (every 5 days vs every 7 months). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Currency transformer ships an update every 7 months, One US Dollar every 5 days. The most recent releases landed on October 10, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Currency transformer | One US Dollar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 5 days** |
| Size | 8 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Diogenes Souza](https://appshunter.io/developer/1208473543) | [Silas Hayri](https://appshunter.io/developer/1721976128) |

## What reviewers say

### Currency transformer

[App page](https://appshunter.io/ios/app/currency-transformer/id1553396310)

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

**In-app purchases:** none


### One US Dollar

[App page](https://appshunter.io/ios/app/one-us-dollar/id6474574039)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Currency transformer free?

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

### Is One US Dollar free?

One US Dollar is free to download, with no in-app purchases.

### Do Currency transformer or One US Dollar have ads?

One US Dollar shows ads; Currency transformer does not.

### Which is updated more often, Currency transformer or One US Dollar?

Currency transformer ships an update every 7 months, and One US Dollar every 5 days. Most recently, Currency transformer was updated on October 10, 2026 and One US Dollar 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.*