# Ji Calendar

> Interactive educational app for learning the Jewish calendar through simulations and games. (iPhone/iPad app by Jewish Interactive Limited.)

- Source: https://appshunter.io/ios/app/ji-calendar/id1106348388 (this page in markdown: same URL + `.md`)
- Developer: [Jewish Interactive Limited](https://appshunter.io/developer/556002227)
- Category: Education
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 1.1 GB
- Languages: American English
- Released: 2016-12-21
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ji-calendar/id1106348388/reviews.md

## What is Ji Calendar?

Ji Calendar is a state-of-the-art, educationally rich, imaginative and enriching series of modules to teach everything that a child needs to know about the Jewish calendar. The app is divided into a classroom tool and an addictive game for students. Students can design their own 'space kid' who will accompany them on their entire journey through the Jewish Calendar.

Note: This app will run best on iPad 3 and more devices

EXPERIENCE
Making this app cross-curricular, are simulations of the astronomy involved with days, months and years. Each simulation displays a window representing what you would see on earth, together with a working 3D model of the solar system, that students and teachers can manipulate to create certain circumstances. There are three modes for each simulation:
PLAY – A free play mode that allows the user to manipulate the earth and moon freely to explain how days, months and years work.
LEARN –A step-by-step mode that guides the learner from the general astronomical model down to the Jewish application, such as the moon being the basis for the Jewish months. 
QUESTS – Students have quests that can be answered by manipulating the 3D solar system models.

JEWISH CALENDAR
At the heart of the product is a calendar tool, which can be used as a classroom tool. Teachers are encouraged to use this tool every day, to discuss today, this month, and this year. The tool demonstrates clearly the overlay of the secular and Jewish calendars. If you have enabled your location settings on your device, then the time shown in the calendar for the zmanim, or times of the Jewish day, will be accurate for your location.

TIME CHALLENGE
Students will find this game addictive, while being immersed in travelling through time. Major concepts are reinforced, and earning ‘powerups’ involves completing quests in the simulations. Students will run through a Jewish day, learning zmanim, through the Jewish week, learning the connection between Creation and the days of the week culminating in Shabbat, through the month, connecting moon phases with the date in the lunar cycle, and through the year, connecting seasons with Jewish months in Israel.

Ji Tap LESSONS on the Calendar
The educational content is reinforced with highly interactive educational lessons, built by Ji experts, in Ji Tap. These games are accessible from within the app.

RICH EDUCATOR GUIDE
Ji Calendar is accompanied by comprehensive educator guides, with rich Jewish content to support the app.
COLLABORATION
"Ji Calendar" is produced by Jewish Interactive (Ji) and funded by The Center For Initiatives In Jewish Education (CIJE) and the Glatt Charitable Trust.

## Key features

- Interactive solar system simulations
- Classroom calendar tool
- Quest-based learning games
- Time travel challenges
- Overlay of secular and Jewish calendars
- Educator guides

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/ji-calendar/id1106348388/reviews.md

### 5/5 — Very informative

*2020-12-28*

Interactive and educational

## Frequently asked questions about Ji Calendar

### What is Ji Calendar?

Ji Calendar is an educational app designed to teach children about the Jewish calendar through interactive simulations, games, and a classroom tool. It covers astronomy, time concepts, and Jewish holidays.

### What are the learning modes in Ji Calendar?

Ji Calendar offers three modes for its simulations: PLAY for free exploration, LEARN for step-by-step guidance, and QUESTS to answer questions by manipulating solar system models.

### How does Ji Calendar help with learning zmanim?

The 'Time Challenge' game immerses students in travelling through time, reinforcing major concepts. Students learn zmanim by running through a Jewish day, connecting moon phases to the lunar cycle, and seasons to Jewish months.

### Can Ji Calendar be used by teachers?

Yes, Ji Calendar includes a calendar tool that teachers are encouraged to use daily to discuss the current day, month, and year. Comprehensive educator guides are also provided to support its use in the classroom.

### What devices does Ji Calendar support?

Ji Calendar is supported on iPhone, iPad, and iPod. It is noted to run best on devices like the iPad 3 and newer.

### Is Ji Calendar suitable for young children?

Ji Calendar has an age rating of 4+, indicating it is designed for young children. The app aims to make learning about the Jewish calendar imaginative and enriching.

### How often is Ji Calendar updated?

The latest version of Ji Calendar is 3.0, which was last updated on August 8, 2018. This indicates a release and update cycle that may not be frequent.

### Does Ji Calendar have ads?

No, Ji Calendar does not contain advertisements. The app is free to download and use without any ad interruptions.

## Version history (last 4 releases)

### 3.0 — 2018-08-08

This app has been updated by Apple to display the Apple Watch app icon.

1. More fun activities
2. Improved Sound
3. Bug fixes
4. Usability improvements

### 2.0 — 2017-04-10

1. User login now required, allowing you to save the design of your runner from device to device
2. High scores - you can now compare your scores with others worldwide
3. Bug fixes
4. Usability improvements

### 1.1 — 2017-01-31

*Improved interface
*Improved location settings
*Bug fixes
*Improved sound effects

### 1.0 — 2016-12-21

No release notes.

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## More apps by Jewish Interactive Limited

- [JI Studio 4 Jewish Kids](https://appshunter.io/ios/app/ji-studio-4-jewish-kids/id839491165)
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- [Alef Bet Wheel](https://appshunter.io/ios/app/alef-bet-wheel/id1088249022)
- [Ji Tap - Create Jewish games](https://appshunter.io/ios/app/ji-tap-create-jewish-games/id1106477681)

All apps by Jewish Interactive Limited: https://appshunter.io/developer/556002227

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*