# ちょきん箱3D vs Instant USD/JPY Calc!

The clearest difference is price: ちょきん箱3D at Free against Instant USD/JPY Calc!'s $2.99. ちょきん箱3D also leads on in-app purchases (none vs 1) and update cadence (daily vs every 3 months). Instant USD/JPY Calc!'s advantage is ads (none vs shown). On device support there is nothing between them.

ちょきん箱3D is free to download; Instant USD/JPY Calc! costs $2.99 up front. Instant USD/JPY Calc! sells 1 in-app purchase, starting at $1.99 per month. ちょきん箱3D asks for nothing beyond the download.

ちょきん箱3D ships an update daily, Instant USD/JPY Calc! every 3 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ちょきん箱3D | Instant USD/JPY Calc! |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 3 months |
| Size | 115 MB | 6 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sumie Watanabe](https://appshunter.io/developer/1349237972) | [Shun Isayama](https://appshunter.io/developer/1578976556) |

## What reviewers say

### ちょきん箱3D

[App page](https://appshunter.io/ios/app/3d/id6444073394)

**Features:** macOS Compatibility

**In-app purchases:** none


### Instant USD/JPY Calc!

[App page](https://appshunter.io/ios/app/instant-usdjpy-calc/id6737494483)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示（初週無料） | $1.99 | per month |


## Frequently asked questions

### Is ちょきん箱3D free?

ちょきん箱3D is free to download, with no in-app purchases.

### Is Instant USD/JPY Calc! free?

Instant USD/JPY Calc! costs $2.99, and also offers in-app purchases.

### Do ちょきん箱3D or Instant USD/JPY Calc! have ads?

ちょきん箱3D shows ads; Instant USD/JPY Calc! does not.

### Which is updated more often, ちょきん箱3D or Instant USD/JPY Calc!?

ちょきん箱3D ships an update daily, and Instant USD/JPY Calc! every 3 months. Most recently, ちょきん箱3D was updated on October 15, 2026 and Instant USD/JPY Calc! on October 10, 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.*