Shift Scheduler vs Calendars
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shift Scheduler
Manage your work schedule with this app. It offers flexible shift arrangement, holiday tracking, and customizable calendar views with icons and colors. Record clock-in/out times and set reminders for your shifts.
- Flexible shift arrangement
- Holiday tracking (US, UK, Canada, etc.)
- Customizable calendar with 40+ icons and unlimited colors
- Clock-in/out time recording
- Shift reminders
- Enable/disable shifts for calendar view
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Shift Scheduler is a useful shift management tool with holiday, free combo shift, alarm for work, and more... It use freedom algorithm to pick shift days, can arrange every shift with combo of the unlimited shifts. It will show your shift schedule in a calendar with Character or 40+ icons combine with unlimited colors, so it will be very easy to show when you arrange much of shift. It can disable shift you don’t need show in calendar recently, and don’t needs to delete it, only one click it can be re-show in your calendar again. It also support record the clock in time and work off time, and it can alert you when it coming with much of time option can be choose. Feature which supported: • Freedom pick shift days, can arrange every shift ! • (NEW!) Holiday, you can show US, UK, Canada, HongKong, Taiwan, China Holidays in your calendar. • ICON: You can now choose your favorite ICON of you shift, about 40+ icon can be choose ! • Character: show the first character on shift name in your calendar view. • Color: You can choose different color with the ICON, unlimited color can be choose! • Unlimited Shift Profile: You can enable or disable the shift in shift list menu, so you don't need to delete any shift configure! disable the shift will let shift not show on your calendar view! • Clock In time: you can choose every shift 's clock in time and off time ! • Reminder: You can choose let Shift Scheduler remind you before Clock in or work off ! • Setting & Review & Feedback: Setting Menu can now feedback to me and rating this app now!
Calendars
This app combines a calendar, task manager, daily planner, and habit tracker. It helps users plan their day, build habits, boost productivity, and stay organized with seamless syncing across all Apple devices. Features include event creation, to-do list management, natural language input, and integration with popular meeting platforms.
- Calendar, task, and habit management
- Daily, weekly, and monthly views
- Natural language event creation
- To-do list organization
- Cross-device syncing
- Meeting platform integration
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Calendars by Readdle is the all-in-one calendar, task manager, daily planner, and habit tracker — seamlessly working across all your Apple devices: Mac, iPhone, iPad, and Apple Watch. Plan your day, build better habits, boost productivity, and stay organized with powerful features and smooth sync between all your devices. What you can do with Calendars: • View and manage your calendar with daily, weekly, and monthly views • Create events, set reminders, and never miss important dates • Use the built-in agenda planner to focus on what matters most • Organize your to-do list and manage your tasks with ease • Quickly add events or to-do items using natural language • Build routines and track your habits to stay consistent • Take a guided productivity course to improve time management and focus • Sync across devices with Google Calendar, iCloud, and more • Customize your planner calendar with color coding and widgets • Join Zoom, Google Meet, or GoToMeeting directly from your calendar • Stay in control of your time, wherever you are Whether you're planning a busy workday, building new habits, or working on personal growth, Calendars brings everything together to help you own your time — across all your Apple devices. Privacy Policy: https://readdle.com/calendars/legal/privacy Terms of Service: https://readdle.com/calendars/legal/terms Have questions, comments, or issues? Don’t hesitate to reach out to us at http://readdle.com/contact
Screenshots
Verdict
The clearest difference is in-app purchases: Shift Scheduler at none against Calendars's 20. Shift Scheduler also leads on iOS requirement (15.0 vs 18.2). Calendars's advantage is update cadence (every 11 days vs every 2 months) and ratings volume (122K vs 7). On price, rating, review sentiment 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. Calendars sells 18 in-app purchases, starting at $3.99 per month. Shift Scheduler asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.7 for Shift Scheduler against 4.7 for Calendars. That said, the two scores are not equally well evidenced: Calendars has 122K ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 60% of Shift Scheduler's written reviews are positive against 55% of Calendars's.
Shift Scheduler ships an update every 2 months, Calendars every 11 days. The most recent releases landed on June 5, 2026 and September 25, 2026 respectively.
| Parameter | Shift Scheduler | Calendars |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (7 ratings) | 4.7 (122K ratings) |
| Positive reviews | 60.0% of reviews — better | 55.4% of reviews |
| Number of ratings | 7 | 122K — better |
| Update frequency | Every 2 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | — | #103 — better |
| Devices | iPhone, iPod | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 15.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 17 MB | 407 MB |
| Age rating | 4+ | 4+ |
| Developer | 洁靖 张 | Readdle Technologies Limited |
Customer experience
Shift Scheduler
Calendars
Bugs and requests
Shift Scheduler
Not enough reviews yet to summarise bugs or requests.
Calendars
Reported bugs
3 issues- Disappearing events and appointments
- Upgrade process causing data loss
- Freezing and crashing on certain devices
Requested features
5 requests- Recurring events for free users
- Customizable widgets and app icons
- Ability to archive/restore past events
- Improved Apple Watch integration
- Shared calendars and family management
In-app purchases
Shift Scheduler
No in-app purchases
Calendars
- Calendars PRO 1 Month$3.991 Month
- Calendars by Readdle: Interesting Calendars1 Month trial$3.991 Year
- Calendars PRO 1 Month7 Days trial$3.991 Month
Show 6 moreShow fewer
- Calendars PRO 1 Year3 Months trial$19.991 Year
- Calendars PRO 1 Year7 Days trial2 variants$19.991 Year
- Calendars PRO 1 Year1 Year trial$19.991 Year
- Calendars PRO 1 Year14 Days trial$19.991 Year
- Calendars PRO 1 Year7 Days trial$21.991 Year
- Calendars PRO 1 Year7 Days trial$29.991 Year
- Calendars PRO LifetimeFree
- Invites & Attendees Upgrade$1.99
- Smart Input Upgrade$1.99
Show 6 moreShow fewer
- Full Upgrade$4.99
- Interesting Calendars$5.99
- My schedule planner, Organizer$6.99
- Full Pack$12.99
- Reminders & Calendars$19.99
- Recurring Events$31.99
Questions
Is Shift Scheduler free?
Is Calendars free?
Which has better reviews, Shift Scheduler or Calendars?
Do Shift Scheduler or Calendars have ads?
Which is updated more often, Shift Scheduler or Calendars?
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