# Jカレンダー vs 偉人と集中

The clearest difference is ads: 偉人と集中 at none against Jカレンダー's shown. 偉人と集中 also leads on update cadence (every 2 weeks vs monthly) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. Jカレンダー sells 1 one-off in-app purchase and 偉人と集中 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Jカレンダー ships an update monthly, 偉人と集中 every 2 weeks. The most recent releases landed on October 16, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Jカレンダー | 偉人と集中 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (27 ratings)](https://appshunter.io/ios/app/j/id765217858/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 65.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 56 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PiyoLog Inc.](https://appshunter.io/developer/440099912) | [arcion Inc.](https://appshunter.io/developer/1889141132) |

## What reviewers say

### Jカレンダー

[App page](https://appshunter.io/ios/app/j/id765217858)

This app offers a visually customizable calendar with Japanese holidays, lunar phases, and traditional Japanese calendars. Add photos and notes to your events, and enjoy daily quotes. It syncs with your device's calendar for seamless scheduling.

**Highlights:** Japanese holidays and traditional calendars (Rokuyo, lunar phases), Photo and note customization for events, Daily quotes and sayings, Syncs with device calendar, Customizable visual themes, Recurring event scheduling

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $2.99 | one-time |


### 偉人と集中

[App page](https://appshunter.io/ios/app/id6786728574)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全集アンロック | $5.99 | one-time |


## Frequently asked questions

### Is Jカレンダー free?

Jカレンダー is free to download, with in-app purchases available.

### Is 偉人と集中 free?

偉人と集中 is free to download, with in-app purchases available.

### Do Jカレンダー or 偉人と集中 have ads?

Jカレンダー shows ads; 偉人と集中 does not.

### Which is updated more often, Jカレンダー or 偉人と集中?

Jカレンダー ships an update monthly, and 偉人と集中 every 2 weeks. Most recently, Jカレンダー was updated on October 16, 2026 and 偉人と集中 on September 30, 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.*