# Jカレンダー vs Nine Star Calendar

The clearest difference is in-app purchases: Nine Star Calendar at none against Jカレンダー's 1. Nine Star Calendar also leads on ads (none vs shown) and review sentiment (100% vs 66%). Jカレンダー's advantage is update cadence (monthly vs every 4 months) and ratings volume (27 vs 4). On price, rating and device support there is nothing between them.

Both are free to download. Jカレンダー sells 1 one-off in-app purchase. Nine Star Calendar asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Jカレンダー against 5.0 for Nine Star Calendar. That said, the two scores are not equally well evidenced: Jカレンダー has 27 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 66% of Jカレンダー's written reviews are positive against 100% of Nine Star Calendar's.

Jカレンダー ships an update monthly, Nine Star Calendar every 4 months. The most recent releases landed on October 29, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Jカレンダー | Nine Star Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (27 ratings)](https://appshunter.io/ios/app/j/id765217858/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/nine-star-calendar/id868256808/reviews)** |
| Number of ratings | **27** | 4 |
| Positive reviews | 65.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 22 MB | 29 MB |
| Requires iOS | 16.6 | **10.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PiyoLog Inc.](https://appshunter.io/developer/440099912) | [NAOTO ADACHI](https://appshunter.io/developer/834250897) |

## 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 |


### Nine Star Calendar

[App page](https://appshunter.io/ios/app/nine-star-calendar/id868256808)

This calendar app uses Nine Star Ki Astrology to highlight lucky days and fortune directions. It offers a simple yet powerful interface with detailed explanations of astrological insights. The app also includes an address book feature.

**Highlights:** Nine Star Ki Astrology integration, Lucky Day display, Fortune Direction for years, months, and days, Detailed astrological explanations, Address Book integration, Simple and powerful UI

**Features:** macOS Compatibility

**In-app purchases:** none


## 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 Nine Star Calendar free?

Nine Star Calendar is free to download, with no in-app purchases.

### Which has better reviews, Jカレンダー or Nine Star Calendar?

Nine Star Calendar is rated higher. Jカレンダー averages 4.9 out of 5 from 27 ratings, while Nine Star Calendar averages 5.0 from 4 ratings.

### Do Jカレンダー or Nine Star Calendar have ads?

Jカレンダー shows ads; Nine Star Calendar does not.

### Which is updated more often, Jカレンダー or Nine Star Calendar?

Jカレンダー ships an update monthly, and Nine Star Calendar every 4 months. Most recently, Jカレンダー was updated on October 29, 2026 and Nine Star Calendar on October 23, 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.*