# でんたくん vs Calcat

The clearest difference is ads: でんたくん at none against Calcat's shown. でんたくん also leads on review sentiment (100% vs 84%) and iOS requirement (13.0 vs 15.6). Calcat's advantage is update cadence (every 12 months vs every 34 months). On price, in-app purchases and device support there is nothing between them.

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

でんたくん ships an update every 34 months, Calcat every 12 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | でんたくん | Calcat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (106 ratings)](https://appshunter.io/ios/app/calcat/id1375207811/reviews)** |
| Number of ratings | — | **106** |
| Positive reviews | **100.0% of reviews** | 83.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 34 months | **Every 12 months** |
| Monetization | — | Ad-supported |
| Size | 2 MB | 7 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [yusuke_sharp9th](https://appshunter.io/developer/409982567) | [sky-nexus Inc.](https://appshunter.io/developer/512522554) |

## What reviewers say

### でんたくん

[App page](https://appshunter.io/ios/app/id710535028)

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

**In-app purchases:** none


### Calcat

[App page](https://appshunter.io/ios/app/calcat/id1375207811)

A calculator app designed for cat lovers, featuring a cute cat sound when calculations are complete. It prioritizes ease of use with a clear display of input and results, allowing users to review their steps and correct mistakes.

**Highlights:** Cat sound on calculation, Easy-to-use interface, View calculation history, Input process display, General calculator mode, Function calculator mode

**In-app purchases:** none


## Frequently asked questions

### Is でんたくん free?

でんたくん is free to download, with no in-app purchases.

### Is Calcat free?

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

### Do でんたくん or Calcat have ads?

Calcat shows ads; でんたくん does not.

### Which is updated more often, でんたくん or Calcat?

でんたくん ships an update every 34 months, and Calcat every 12 months. Most recently, でんたくん was updated on October 26, 2026 and Calcat on October 29, 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.*