Ultimate Zmanim vs Simple Siddur
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ultimate Zmanim
This app provides accurate Jewish calendar times, including Shabbat candle lighting, holidays, and daily prayer times, with customizable reminders and offline functionality. It offers a user-friendly interface with timeline navigation and Apple Watch integration for convenient access to important halachic times.
- GPS-based zmanim calculations
- Shabbat candle lighting times
- Holiday and weekly parashah information
- Daf Yomi tracking
- Customizable daily reminders
- Apple Watch companion app
- Offline functionality
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Ultimate Zmanim is the premiere zmanim app for iOS, now with even more features. iOS Features: - GPS-based calculations - Calendrical information, including Shabbat candle lighting times, weekly parashah, chagim, and daf yomi - Daily reminders, scheduled based on zmanim - Beautiful printouts for your shul's bimah or your fridge - Over 100 calculations to customize according to - Companion watch app featuring complications - Today widget in Notification Center - Intuitive timeline navigation - Force touch shortcuts to quickly access alarms, location settings, and more - Split-screen multitasking support on iPad watchOS Features: - Native to watchOS, so it's faster than ever - Expanded complications - Tap a zman for a detailed explanation of the calculation - Force touch menu options, including one to reload your location --- Description: Ultimate Zmanim calculates times using your GPS for maximum accuracy. There's also a rich location picker, so you don't have to be online to set it up. Ultimate Zmanim always works, even when there's no internet. Ultimate Zmanim doesn't stop with the daily zmanim - it also lists chagim, the weekly parashah for both in Israel and out, candle lighting times, and daf yomi. Today's zmanim fade out as they pass, so you can tell what's next at a glance. Ultimate Zmanim also runs on Apple Watch, so you can get notifications, and information about the next upcoming zman right on your watch. With Zmanim Alarms, Ultimate Zmanim can remind you of important zmanim throughout the day. Shema, t'fila, and weekly candle lighting are all covered. Ultimate Zmanim supports printing of the daily Zmanim via AirPrint. You can use this to hang them up in public places, such as your shul, school, or mikveh. You can look up zmanim for any day by tapping on the timeline or the Hebrew date to show a date picker. Tap again to hide it. You can also drag in either direction for convenient access to the previous or the next day. The timeline also supports both the Hebrew and Gregorian calendars. Open the date picker to switch between them. Ultimate Zmanim will remember your selection across app launches. Ultimate Zmanim has been a long time in the making, and I hope you enjoy using it as much as I enjoyed building it! --- What users from the United States, Canada and the United Kingdom are saying: "Best zmanim app out there, gorgeous and intuitive, thanks!!" - tzviki123 "This is my favorite Zmanim app. It's got a beautiful design and the widget is also super helpful. Keep up the great work!" - Bmw1821 "This app nails the difficult challenge of making spiritual software. I love going through my day knowing that my phone will alert me to all the ritually important times." - portal keeper "Great presentation of halachic zmanim with really nice apple watch interface" - Paul Claman "I live in England and I carry it around with me where ever I go. It's got all the info you need including what day of daf hayomi it is.... 5*****" - Rubi roxx ---
Simple Siddur
This app provides a comprehensive digital siddur with all prayers for various Nusachs, essential blessings, and practical tools like a compass and Zmanim. It also includes information on Minyanim and Mikvah, making it a complete reference for Jewish prayer and observance.
- All prayers for different Nusachs
- Essential Brachot
- Compass
- Zmanim
- Minyanim
- Mikvah information
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Simple Siddur is a beautifully designed IOS 8+ siddur app that comes packed with a bunch of awesome features. Notable Features: All prayers (For different Nusachs) Essential Brachot Compass Zmanim Minyanim Mikvah and Much More! Follow on twitter @par3inc Email any questions or request to: par.3inc@gmail.com
Screenshots
Verdict
The clearest difference is in-app purchases: Simple Siddur at none against Ultimate Zmanim's 1. Simple Siddur also leads on iOS requirement (10.0 vs 15.0). Ultimate Zmanim's advantage is update cadence (every 2 weeks vs every 3 months) and rating (4.3 vs 4.1). On price, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Ultimate Zmanim sells 1 one-off in-app purchase. Simple Siddur asks for nothing beyond the download.
Ultimate Zmanim holds the better App Store score, 4.3 against 4.1. Both are backed by a comparable volume of ratings — 131 and 125 respectively. Written reviews point the same way: 78% of Ultimate Zmanim's written reviews are positive against 67% of Simple Siddur's.
Ultimate Zmanim ships an update every 2 weeks, Simple Siddur every 3 months. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.
| Parameter | Ultimate Zmanim | Simple Siddur |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (131 ratings) — better | 4.1 (125 ratings) |
| Positive reviews | 77.9% of reviews — better | 67.2% of reviews |
| Number of ratings | 131 — better | 125 |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Moshe Berman | Ehud Adler |
Customer experience
Ultimate Zmanim
Simple Siddur
User reviews
Ultimate Zmanim
From 131 App Store ratingsWhat we love
- 👍 Easy to use
- 🌟 Accurate Zmanim calculations
- 🌍 Global Zmanim data
- ✨ Clean and intuitive interface
- 🎨 Customizable options
Room to improve
- 🐛 App crashes/doesn't open
- 🐛 Location issues
- 🐛 Watch app/complications not working
- 🐛 Incorrect Zmanim times
- 🐛 Updates breaking the app
Simple Siddur
From 125 App Store ratingsWhat we love
- 👍 Easy to use
- 🌟 Packed with features
- 👍 Great for all nusachim
- 👍 Clean text
- 👍 Fluid interface
Room to improve
- 🐛 Missing Hallel
- 🐛 Missing Mussaf for Rosh Chodesh
- 🐛 Missing key features
- 🐛 Doesn't let you change Nusach
- 🐛 Not great ease of use
Bugs and requests
Ultimate Zmanim
Reported bugs
28 issues- App keeps alerting with LA time instead of current location
- White screen when opening app on iPad
- App will no longer open on iPad
- Update broke the app
- Winter time displayed after upgrade
Show 23 moreShow fewer
- Error in the app
- First update messed up Zmanim, widget info incorrect, Zmanim same for Jerusalem and Brooklyn
- App shuts right off after new update
- App doesn't open since the update
- App does not open since the last update
- Version 11.7.1 did not completely address the issue with iOS16 update, gets 'stuck'
- 'Reset To Today' function does not bring back to the current date
- One day discrepancy in Zmanim including calendar calculations since iOS16 update
- Omer counting is wrong on some days
- Zmanim alerts giving alerts for a location five hours ahead
- Hebrew titles in the widget not working
- Bug in Chanukah: started a day early, repeated Light 1, repeated Light 3, others a day late, ended a day late
- Watch complication not available for most watch faces
- iOS 14 widgets not found for Infograph and Infograph modular watch faces
- Zmanim are all off on Apple Watch 5, no complications
- Watch os versions keeps on uninstalling itself
- Cannot do anything like print
- Ad's background music
- Location resets to current waypoint when trying to check other cities
- If location services are off, Zmanim are not shown
- Latest version contains a mistake: changing location does not hold, reverts to current location
- Crashes on iPhone 5c with iOS10.3, blank screen
- Cannot check Zmanim for anywhere else, switches back to current location
Requested features
15 requests- Mizrach compass
- Apple Watch face complication to display custom Zmanim
- Customization to carry over to watch app
- Daf Yomi (Yerushalmi) option
- Hebrew date in the widget
Show 10 moreShow fewer
- Alert/alarm for Sunset (Shkiah)
- Pull to refresh option
- Add Jewish holidays
- Dark mode support
- iOS 14 widgets
- Jewish calendar for holidays
- Ability to add and title Jewish dates (birthdays, yahrtzeits)
- Option to choose what to show on iWatch complication
- Support for Infograph watch faces
- Reminders for Maariv/Tzeit Hakochavim
Simple Siddur
Reported bugs
20 issues- App crashes or randomly closes
- App resets on reopen
- Invisible prayer issue
- Tehillim bug, can't scroll down
- Words overlap in Shmoneh Esrei
Show 15 moreShow fewer
- Words not clear on iPhone X
- Hebrew text garbled in iOS 12
- iOS 12 glitch
- Paragraphs of arbit and Minha erased
- Letters jumbled together
- Print run together, unreadable
- Words ran over each other
- Compass is off
- App crashes when opening daf yomi page
- Text bug
- Crashing by shema and shemona esrei
- Shachris ends at גאל ישראל
- Tehillim bug, can't scroll down past the first page
- Missing Bracha between Hashkivenu and Amida
- Candle lighting timing wrong
Requested features
17 requests- Add Hallel
- Add Mussaf for Rosh Chodesh
- Implement a table of contents
- Add ברוך ה׳ אמן ואמן to maariv
- Add Birkat Netilat Yadayim, Asher yatzar and Birkat Hatorah
Show 12 moreShow fewer
- Add model ani, ma tovu, birchos HaTorah
- Navigation menu to choose tefilot
- Option to choose different font
- Easy to read menu at home page
- Add the ability to tap the top of the screen to scroll to top
- Add transliteration option
- Add English instructions or translation
- Fix compass accuracy
- Improve opening interface
- Add Tehillim
- Add Daf Yomi
- Fix Tehillim chapter indicator
In-app purchases
Ultimate Zmanim
- Premium Pack$2.99
Simple Siddur
No in-app purchases
Questions
Is Ultimate Zmanim free?
Is Simple Siddur free?
Which has better reviews, Ultimate Zmanim or Simple Siddur?
Do Ultimate Zmanim or Simple Siddur have ads?
Which is updated more often, Ultimate Zmanim or Simple Siddur?
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