Comparison

Calendars vs Shift Calendar Planner

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Calendar, task, and habit management
  • Daily, weekly, and monthly views
  • Natural language event creation
  • To-do list organization
  • Cross-device syncing
  • Meeting platform integration
Features
Read full description

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

About

Shift Calendar Planner

Manage your work shifts, personal events, and time off with this intuitive calendar app. Track earnings, create payout reports, and receive schedule conflict alerts. Designed for professionals working rotating schedules.

Highlights
  • Automatic shift schedules
  • Earnings tracking
  • Payout reports
  • Time-off planning
  • Calendar synchronization
  • Home screen widgets
  • Cloud backup
Read full description

Shift Calendar is a simple and efficient way to manage your work shifts. Organize your schedule with rotations, days off, swaps, and absences, track your earnings, create payout reports, and keep a clear overview of your professional routine, without relying on spreadsheets or manual tracking. Designed for professionals who work in shifts. Why choose Shift Calendar? • Organized schedule: manage your shifts, personal events, swaps, and days off in one place, with full visibility of your work schedule. • Financial clarity: know how much you will earn and when you will get paid, with the option to generate PDF reports for payouts, sharing, or printing. • Time-off planning: avoid surprises and enjoy your rest periods with more peace of mind. • Simple, practical, and intuitive: built to support your daily routine. Main features: • Automatic shift schedules and recurring patterns • Personal events registration • Calendar synchronization • Earnings tracking with amounts, payment dates, and custom payment rules • Custom colors to differentiate shifts • Mark unworked shifts as swaps, days off, or absences • Home screen widgets • Export shift reports to PDF, with filters and multiple formats • Schedule conflict alerts • Secure cloud backup Perfect for professionals like: • Nurses, doctors, EMTs, and caregivers • Firefighters, police, and security guards • Bartenders, restaurant and hotel staff • Drivers, cleaners, and rotating shift workers The app can be used for free. The Pro version offers additional features, with a free trial available before subscribing. ——— Support and Contact: We’re here to help! Contact us via email at: support-shiftcalendar@bivis.app Terms & Conditions and Privacy Policy: https://tenhoplantao.com.br/terms-conditions-and-privacy-policy

Screenshots

Calendars4 screens
Shift Calendar Planner4 screens

Verdict

The call

The clearest difference is ratings volume: Calendars at 122K against Shift Calendar Planner's 27. Calendars also leads on update cadence (weekly vs every 3 weeks) and chart position (#139 vs unranked). Shift Calendar Planner's advantage is review sentiment (81% vs 56%). On price, rating, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calendars sells 18 in-app purchases, starting at $3.99 per month and Shift Calendar Planner sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Calendars against 4.6 for Shift Calendar Planner. That said, the two scores are not equally well evidenced: Calendars has 122K ratings behind it against 27, so its average is the more settled of the two. Written reviews are what separate them: 56% of Calendars's written reviews are positive against 81% of Shift Calendar Planner's.

UpkeepUpdate frequency

Calendars ships an update weekly, Shift Calendar Planner every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 6 level
Calendars versus Shift Calendar Planner: the parameters behind the verdict, then further details
ParameterCalendarsShift Calendar Planner
PriceFreeFree
Rating4.7 (122K ratings) — better4.6 (27 ratings)
Positive reviews55.8% of reviews80.6% of reviews — better
Number of ratings122K — better27
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#139 — better—
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone
Requires iOS18.217.0 — better
Further details — not scored
Size412 MB61 MB
Age rating4+4+
DeveloperReaddle Technologies LimitedBivis

Customer experience

Calendars

All ratings122,379 ratings
Positive93.8%
Neutral3.1%
Negative3.1%
Written reviews1,286 reviews
Positive55.8%
Neutral8.6%
Negative35.6%

Shift Calendar Planner

All ratings27 ratings
Positive88.9%
Neutral3.7%
Negative7.4%
Written reviews31 reviews
Positive80.6%
Neutral3.2%
Negative16.1%

User reviews

Calendars

From 122K App Store ratings

What we love

  • 🌟 Excellent calendar app
  • 👍 Easy to use and organize
  • 🎨 Helpful color-coding
  • 📆 Seamless integration with other calendars
  • 🗓️ Detailed monthly/weekly views

Room to improve

  • 🐛 Occasional glitches and data loss
  • 💰 Concerns over subscription model
  • 🕰️ Cumbersome date/time selection process
  • 🔍 Limited location search functionality
  • 🔄 Sync issues between devices

Shift Calendar Planner

From 27 App Store ratings

What we love

  • 👍 Easy to use and intuitive interface
  • ✅ Complete and comprehensive for shift management
  • 💰 Good for tracking payments and earnings
  • 🗓️ Helps organize work schedules and agendas
  • 💸 Useful for financial control of shifts

Room to improve

  • 🐛 App closes unexpectedly when adding locations
  • ⚠️ Difficulty editing recurrence without deleting
  • 📉 Some users find it difficult to navigate
  • 🚫 Limited free features, many require payment
  • 🧮 Inaccurate value registration (e.g., 1392 becomes 1391.90)

Bugs and 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

Shift Calendar Planner

Reported bugs

4 issues
  • App closes alone when adding location
  • Payment organization feature not working
  • Inaccurate value registration (e.g., 1392 becomes 1391.90)
  • Cannot edit recurrence without deleting entire schedule

Requested features

7 requests
  • Allow custom alerts (e.g., 12 hours before shift)
  • Option to change main screen design (e.g., colored dots)
  • Widget for easy access on the home screen
  • Improve recurrence editing functionality
  • Fix value input errors
Show 2 more
  • Enhance payment organization feature
  • Add more free shift scale options

In-app purchases

18 purchases

Calendars

Subscriptions9
  • 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 more
  • 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
One-time9
  • Calendars PRO LifetimeFree
  • Invites & Attendees Upgrade$1.99
  • Smart Input Upgrade$1.99
Show 6 more
  • 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
4 purchases

Shift Calendar Planner

Subscriptions3
  • Shift Calendar Monthly1 Month trial$1.991 Month
  • Shift Calendar Monthly7 Days trial$2.991 Month
  • Shift Calendar Annual7 Days trial2 variants$15.991 Year
One-time1
  • Lifetime$34.99

Questions

Is Calendars free?
Calendars is free to download, with in-app purchases available.
Is Shift Calendar Planner free?
Shift Calendar Planner is free to download, with in-app purchases available.
Which has better reviews, Calendars or Shift Calendar Planner?
Calendars is rated higher. Calendars averages 4.7 out of 5 from 122K ratings, while Shift Calendar Planner averages 4.6 from 27 ratings.
Do Calendars or Shift Calendar Planner have ads?
Neither Calendars nor Shift Calendar Planner shows ads.
Which is updated more often, Calendars or Shift Calendar Planner?
Calendars ships an update weekly, and Shift Calendar Planner every 3 weeks. Most recently, Calendars was updated on October 25, 2026 and Shift Calendar Planner on October 24, 2026.

Other comparisons