# しろにゃん電卓 vs Happy Kitty Calculator

The clearest difference is update cadence: Happy Kitty Calculator at every 3 weeks against しろにゃん電卓's every 30 months. Happy Kitty Calculator also leads on iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. しろにゃん電卓 sells 1 one-off in-app purchase and Happy Kitty Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

しろにゃん電卓 ships an update every 30 months, Happy Kitty Calculator every 3 weeks. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | しろにゃん電卓 | Happy Kitty Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 59 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Noshi.corporation](https://appshunter.io/developer/1736662057) | [HUA-TENG HUANG](https://appshunter.io/developer/1780056727) |

## What reviewers say

### しろにゃん電卓

[App page](https://appshunter.io/ios/app/id6479628667)

A cute and simple calculator app that makes everyday calculations fun with charming character animations. It handles basic arithmetic, tax, and discount calculations, with a clear display and helpful features like calculation history and haptic feedback.

**Highlights:** Basic arithmetic operations, Tax and discount calculations, Calculation history, Large, easy-to-read display, Character animations on button press, Haptic feedback and VoiceOver support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 限定解除 | $1.99 | one-time |


### Happy Kitty Calculator

[App page](https://appshunter.io/ios/app/happy-kitty-calculator/id6739179959)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One-time purchase. | $2.99 | one-time |


## Frequently asked questions

### Is しろにゃん電卓 free?

しろにゃん電卓 is free to download, with in-app purchases available.

### Is Happy Kitty Calculator free?

Happy Kitty Calculator is free to download, with in-app purchases available.

### Do しろにゃん電卓 or Happy Kitty Calculator have ads?

Neither しろにゃん電卓 nor Happy Kitty Calculator shows ads.

### Which is updated more often, しろにゃん電卓 or Happy Kitty Calculator?

しろにゃん電卓 ships an update every 30 months, and Happy Kitty Calculator every 3 weeks. Most recently, しろにゃん電卓 was updated on October 14, 2026 and Happy Kitty Calculator on October 25, 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.*