# Japan Cloud vs CalcKey

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

Both are free to download. CalcKey sells 2 in-app purchases, starting at $3.99 per month. Japan Cloud asks for nothing beyond the download.

Japan Cloud ships an update every 2 months, CalcKey every 3 weeks. The most recent releases landed on October 26, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Japan Cloud | CalcKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (10 ratings)](https://appshunter.io/ios/app/calckey-calculator-keyboard/id6748647909/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 71 MB | 14 MB |
| Requires iOS | 15.6 | **15** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JAPAN SECURITY SISTEMAS DE SEGURANÇA](https://appshunter.io/developer/1309145380) | [Right Tracks IT Limited](https://appshunter.io/developer/1803615116) |

## What reviewers say

### Japan Cloud

[App page](https://appshunter.io/ios/app/japan-cloud/id1438658477)

**Features:** macOS Compatibility

**In-app purchases:** none


### CalcKey

[App page](https://appshunter.io/ios/app/calckey-calculator-keyboard/id6748647909)

Perform calculations directly within any app using a smart keyboard extension. Get instant results for basic and scientific equations, with a history of your calculations. Enjoy a seamless typing experience and smart formatting.

**Highlights:** Keyboard calculator extension, Real-time results, Basic & scientific calculators, Calculation history, Smart formatting, Standalone app option

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CalcKey Pro Monthly | $3.99 | per month |
| One time purchase | $19.99 | one-time |


## Frequently asked questions

### Is Japan Cloud free?

Japan Cloud is free to download, with no in-app purchases.

### Is CalcKey free?

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

### Do Japan Cloud or CalcKey have ads?

Neither Japan Cloud nor CalcKey shows ads.

### Which is updated more often, Japan Cloud or CalcKey?

Japan Cloud ships an update every 2 months, and CalcKey every 3 weeks. Most recently, Japan Cloud was updated on October 26, 2026 and CalcKey on November 5, 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.*