# 通貨換算 vs Trarrency

The clearest difference is in-app purchases: 通貨換算 at none against Trarrency's 1. 通貨換算 also leads on ads (none vs shown) and update cadence (daily vs weekly). Trarrency's advantage is device support (3 vs 1) and iOS requirement (13 vs 18.0). On price there is nothing between them.

Both are free to download. Trarrency sells 1 one-off in-app purchase. 通貨換算 asks for nothing beyond the download.

通貨換算 ships an update daily, Trarrency weekly. The most recent releases landed on October 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 通貨換算 | Trarrency |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Weekly |
| Size | 14 MB | 71 MB |
| Requires iOS | 18.0 | **13** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KENICHI YAMAMOTO](https://appshunter.io/developer/1335325739) | [Ko Jui Lin](https://appshunter.io/developer/1835687409) |

## What reviewers say

### 通貨換算

[App page](https://appshunter.io/ios/app/id6749664483)

**Features:** macOS Compatibility

**In-app purchases:** none


### Trarrency

[App page](https://appshunter.io/ios/app/trarrency-currency-assistant/id6751544317)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is 通貨換算 free?

通貨換算 is free to download, with no in-app purchases.

### Is Trarrency free?

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

### Do 通貨換算 or Trarrency have ads?

Trarrency shows ads; 通貨換算 does not.

### Which is updated more often, 通貨換算 or Trarrency?

通貨換算 ships an update daily, and Trarrency weekly. Most recently, 通貨換算 was updated on October 25, 2026 and Trarrency on October 13, 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.*