# Koyomi (Calendar) vs PLAN KUMA

The clearest difference is update cadence: Koyomi (Calendar) at every 3 months against PLAN KUMA's every 48 months. PLAN KUMA's advantage is iOS requirement (9.0 vs 16.6). On price, ads, 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.

Koyomi (Calendar) ships an update every 3 months, PLAN KUMA every 48 months. The most recent releases landed on November 2, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Koyomi (Calendar) | PLAN KUMA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 48 months |
| Monetization | Free | — |
| Size | 2 MB | 11 MB |
| Requires iOS | 16.6 | **9.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kouichi Abe](https://appshunter.io/developer/295852950) | [YUUKI ENDO](https://appshunter.io/developer/926368288) |

## What reviewers say

### Koyomi (Calendar)

[App page](https://appshunter.io/ios/app/koyomi-calendar/id1105884989)

This simple calendar app displays three months at a time, along with an annual view. Easily navigate between months and years with intuitive scrolling gestures. It offers a straightforward yet highly useful way to manage your schedule.

**Highlights:** Three-month calendar view, Annual calendar view, Intuitive scrolling navigation, Simple and useful interface

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

**In-app purchases:** none


### PLAN KUMA

[App page](https://appshunter.io/ios/app/plan-kuma/id1114498683)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Koyomi (Calendar) free?

Koyomi (Calendar) is free to download, with no in-app purchases.

### Is PLAN KUMA free?

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

### Do Koyomi (Calendar) or PLAN KUMA have ads?

Neither Koyomi (Calendar) nor PLAN KUMA shows ads.

### Which is updated more often, Koyomi (Calendar) or PLAN KUMA?

Koyomi (Calendar) ships an update every 3 months, and PLAN KUMA every 48 months. Most recently, Koyomi (Calendar) was updated on November 2, 2026 and PLAN KUMA 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.*