# Original Jewish Calendar > Converts Gregorian dates to Jewish calendar dates and vice versa. (iPhone/iPad app by Frank Yellin.) - Source: https://appshunter.io/ios/app/original-jewish-calendar/id473564970 (this page in markdown: same URL + `.md`) - Developer: [Frank Yellin](https://appshunter.io/developer/1476738490) - Category: Reference, Lifestyle - Price: Free - Age rating: 4+ - Requires: iOS 26.5 · 1 MB - Languages: American English - Released: 2012-02-13 - Data updated: 2026-08-13 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/original-jewish-calendar/id473564970/reviews.md ## What is Original Jewish Calendar? What's your birthday in the Jewish Calendar? Your friend's? When's Passover this year? How about ten years from now? The original Jewish Calendar is ready for the iPhone. The same simple UI and functionality of the MacOS program is now on your phone. Provides conversion between the Gregorian (secular) calendar and the Jewish calendar. Look up holidays or any date, for hundreds of years to come. ## Key features - Gregorian to Jewish calendar conversion - Jewish to Gregorian calendar conversion - Holiday lookup - Future date lookup - Hundreds of years of dates - Simple UI ## Recent user reviews (10 of 16) All indexed reviews: https://appshunter.io/ios/app/original-jewish-calendar/id473564970/reviews.md ### 5/5 — Thanks for the update! *2026-07-31* Thanks for updating the Jewish Calendar program to be “Universal” so that it will run on Intel Macs and on Apple Silicon Macs without using Rosetta. ### 5/5 — Intel? *2026-07-23* Used for years, always helpful. Release 4.0 looks better, cleaner look, etc. But it still comes up as “Intel” based. Last year, I finally ‘graduated’ and Apple-M4 chip. The app still works, but it ‘reminds’ me about all my Intel based apps pretty frequently.. Presumably, it won’t work in the future? ### 5/5 — Does just what is says very well *2019-04-03* Nicely written and easy to use. Only concern I have is that I got a notice that it’s “not optimized for my Mac.” I assuem this means there’s some code that could run more efficiently if it was written differently. Let’s hope the developer continues to maintain the app as Apple continues to update the macOS. ### 4/5 — Works with Mavericks / OS X 10.9.5 *2015-08-17* It said it was an upgrade to be compatible to OS Lion. So, I knew it’d run on a 64 bit OS. I saw that others said it also works with Mountain Lion. So, I was hopeful that it would run on Mavericks. I downloaded & installed it with no difficulties. I have opened it, and looked up my DOB, and my daughter’s DOB. Both DOBs translated quickly, to the correct Jewish calendar dates. Yippee! The only reason I didn’t give it 5 stars is that it hasn’t been installed & running for any length of time. ### 2/5 — Simple and frankly, useless *2012-11-21* Anyone needing a Jewish calendar understands that the simplicity of this one has no use. How in the world is it useful enough for reviewers to say "I use it all the time?" For what, exactly? It's free, so enjoy. ### 5/5 — Long time user *2012-09-09* I've been using this for about 15 years now. Glad to see that it's been updated for Lion. I've stayed with Snow Leopard because it breaks some of my apps. It's nice that this is no longer in that category. Shalom ### 5/5 — Works with Mountain Lion!! *2012-08-26* Kudos! Great app, and so glad that it still works with Mountain Lion. 5 stars! ### 5/5 — good to have it *2012-07-26* Thanks for retrieving historic Jewish calendar and bringing it to the Macs. ### 5/5 — Avi Drissman Is A Genius *2012-05-20* "Jewish Calendar": The. Best. Ever. (Halevai, there should be a version for iPhone!) ### 5/5 — Awesome *2012-02-23* It would be great if the graphics were updated with themes to choose from, but it's free, so five stars. ## Frequently asked questions about Original Jewish Calendar ### What is the Original Jewish Calendar app? The Original Jewish Calendar app provides conversion between the Gregorian (secular) calendar and the Jewish calendar. It allows users to look up holidays or any date for hundreds of years into the future. ### What devices does the Original Jewish Calendar app support? The Original Jewish Calendar app is available for iPhone, iPad, and Mac devices. ### How far into the future can I look up dates with the Original Jewish Calendar app? The Original Jewish Calendar app allows you to look up dates for hundreds of years into the future. ### Does the Original Jewish Calendar app have ads? No, the Original Jewish Calendar app does not contain advertisements. ### When was the Original Jewish Calendar app last updated? The Original Jewish Calendar app was last updated on August 4, 2026, with version 4.0. ### What is the age rating for the Original Jewish Calendar app? The Original Jewish Calendar app has an age rating of 4+. ### Is the Original Jewish Calendar app free to use? Yes, the Original Jewish Calendar app is available for free. ### What is the main functionality of the Original Jewish Calendar app? The main functionality is to convert dates between the Gregorian and Jewish calendars and to look up Jewish holidays and specific dates. ## Version history (last 1 release) ### 4.0 — 2026-08-04 No release notes. ## Related topics [jewish calendar and holidays l](https://appshunter.io/ios/topics/jewish-calendar-and-holidays-l) --- *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 2026-08-13.*