# KumamonCalc vs Deco カレンダー

The clearest difference is rating: KumamonCalc at 5.0 against Deco カレンダー's 4.0. Deco カレンダー's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume, device support and iOS requirement there is nothing between them.

Both are free to download. KumamonCalc sells 1 one-off in-app purchase. Deco カレンダー asks for nothing beyond the download.

KumamonCalc holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

KumamonCalc ships an update every 3 months, Deco カレンダー every 5 weeks. Both last shipped on October 2, 2026.

## The numbers

| Metric | KumamonCalc | Deco カレンダー |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/kumamoncalc/id830364492/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/deco/id1545350571/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 50 MB | 4 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [woodsmall inc.](https://appshunter.io/developer/708077492) | [Yuichiro Iwase](https://appshunter.io/developer/1498436845) |

## What reviewers say

### KumamonCalc

[App page](https://appshunter.io/ios/app/kumamoncalc/id830364492)

A straightforward calculator featuring the popular Kumamon character. It supports basic arithmetic, percentage calculations, and memory functions. Users can customize themes and toggle sound effects.

**Highlights:** Basic arithmetic operations, Percentage calculation, Memory function, Customizable themes, Sound ON/OFF option, 12-digit input support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advertising hide | $4.99 | one-time |


### Deco カレンダー

[App page](https://appshunter.io/ios/app/deco/id1545350571)

Personalize your calendar with a variety of stylish wallpapers and themes. Easily manage your schedule with standard calendar functions, including adding, editing, and sharing events. Syncs with iCloud and Google Calendar for seamless integration.

**Highlights:** Customizable image and movie wallpapers, Date label font and size options, Add, edit, and remove schedules, Schedule sharing via mail and SNS, Integrated map function, Sync with iCloud and Google Calendar

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KumamonCalc free?

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

### Is Deco カレンダー free?

Deco カレンダー is free to download, with no in-app purchases.

### Which has better reviews, KumamonCalc or Deco カレンダー?

KumamonCalc is rated higher. KumamonCalc averages 5.0 out of 5 from 2 ratings, while Deco カレンダー averages 4.0 from 3 ratings.

### Do KumamonCalc or Deco カレンダー have ads?

KumamonCalc shows ads; Deco カレンダー does not.

### Which is updated more often, KumamonCalc or Deco カレンダー?

KumamonCalc ships an update every 3 months, and Deco カレンダー every 5 weeks. Most recently, KumamonCalc was updated on October 2, 2026 and Deco カレンダー on October 2, 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.*