Comparison

Do! Premium vs Calendars

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

Head to head
About

Do! Premium

This app helps you manage your tasks with a focus on simplicity and ease of use. It allows for quick task addition and completion, automated recurring tasks, and secure data storage. Personalize your experience with themes and fonts.

Highlights
  • Quick task addition and completion
  • Automated recurring tasks
  • Widgets for at-a-glance task viewing
  • Passcode/Face ID security
  • Dropbox/Email backup and restore
  • Customizable themes and fonts
Features
Read full description

Jot it down. Enjoy checking it off. Groceries on the way home. A deadline you don't want to miss. A habit you'd like to keep. Do! Premium gives your everyday to-dos a simple, ad-free home: add a task, then double-tap when it's done. ■ A thought, a note, a satisfying checkoff Catch a task while it's on your mind. Finished? Double-tap to mark it done. Even a small task deserves that little moment of satisfaction. ■ Make it a list you like coming back to Choose your themes and fonts, with sounds inspired by pen and paper. Like picking a favorite notebook, make your daily list feel like yours. ■ A place for every part of your day Keep work, study and shopping in their own groups. Add color to tell things apart, and pin the tasks you want to keep in sight. ■ Less to remember, every time around Set tasks to repeat daily, weekly, monthly or yearly. Add reminders for the things you don't want to miss. ■ A quick look from your home screen Keep your to-dos close with home screen widgets. Check your list during a busy morning without opening the app. ■ Put your keyboard to work Use an external keyboard to add tasks and give longer notes room to breathe. • Add a task: Command(⌘) + N • Insert a line break: Option(⌥/Alt) + Enter ■ Your list, on your other devices Use the same app and sign in with the same account to sync your tasks across devices. Pick up your familiar list when you switch devices. ■ App lock and backups Lock access to the app with a passcode or Face ID on supported devices. Back up your data through Dropbox or email and restore it when needed. It doesn't have to be a big plan. Start with one thing you'd like to do today. ■ No ads This is a paid version with no ads. Questions and suggestions: do@simplerion.com

About

Calendars

This app combines calendar, task management, and habit tracking to boost productivity and organization. It offers seamless syncing across Apple devices and integrates with popular services like Google Calendar. Plan your day, manage tasks, and build routines with customizable views and features.

Highlights
  • Calendar and task management
  • Habit tracking and routine building
  • Cross-device syncing
  • Natural language event creation
  • Integration with Google Calendar and Zoom
  • Customizable views and widgets
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

Screenshots

Do! Premium4 screens
Calendars4 screens

Verdict

The call

The clearest difference is price: Calendars at Free against Do! Premium's $20.00. Calendars also leads on ratings volume (123K vs 238) and chart position (#150 vs unranked). Do! Premium's advantage is review sentiment (75% vs 56%) and iOS requirement (15.0 vs 18.2). On rating, ads, in-app purchases and monetization model 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

Calendars is free to download; Do! Premium costs $20.00 up front. Do! Premium sells 1 one-off in-app purchase and Calendars sells 18 in-app purchases, starting at $3.99 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 Do! Premium against 4.7 for Calendars. That said, the two scores are not equally well evidenced: Calendars has 123K ratings behind it against 238, so its average is the more settled of the two. Written reviews are what separate them: 75% of Do! Premium's written reviews are positive against 56% of Calendars's.

UpkeepUpdate frequency

Do! Premium ships an update fortnightly, Calendars weekly. Both last shipped on November 1, 2026.

Scorecard6 real differences · 5 level
Do! Premium versus Calendars: the parameters behind the verdict, then further details
ParameterDo! PremiumCalendars
Price$20.00Free — better
Rating4.7 (238 ratings)4.7 (123K ratings) — better
Positive reviews75.2% of reviews — better55.8% of reviews
Number of ratings238123K — better
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank—#150 — better
DevicesiPhone, iPad, iPod, Apple WatchiPhone, iPad, Mac, Apple Watch
Requires iOS15.0 — better18.2
Further details — not scored
Size99 MB413 MB
Age rating4+4+
DeveloperSIMPLERION Co., LtdReaddle Technologies Limited

Customer experience

Do! Premium

All ratings238 ratings
Positive92.0%
Neutral2.5%
Negative5.5%
Written reviews210 reviews
Positive75.2%
Neutral11.4%
Negative13.3%

Calendars

All ratings122,497 ratings
Positive93.8%
Neutral3.1%
Negative3.1%
Written reviews1,290 reviews
Positive55.8%
Neutral8.6%
Negative35.6%

User reviews

Do! Premium

From 238 App Store ratings

What we love

  • 👍 Simple and intuitive user interface
  • 🎨 Customizable fonts and color-coded prioritization
  • ⚡ Quick and easy task entry
  • 📱 Widget functionality for home screen access
  • 🎯 Clean, elegant design with notepad aesthetic

Room to improve

  • 🔄 No cross-device synchronization
  • 💔 Separate free and premium versions don't share data
  • 🐛 Frequent crashes on newer iOS versions
  • 💸 Multiple purchases required for full features
  • ⚠️ Limited customer support responsiveness

Calendars

From 123K 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

Bugs and requests

Do! Premium

Reported bugs

11 issues
  • App crashes on iPhone XS Max and newer devices
  • Force closes on iOS 13 and later
  • Crashes when opening app after backup restore
  • Alarm not working on iPhone 11 Pro
  • Widget not appearing after installation
Show 6 more
  • Task sorting issues with auto-sort enabled
  • Calendar day won't process multiple task additions
  • Premium version crashes or doesn't recognize purchases
  • Tasks revert to top of list after editing
  • Pound sterling symbol (£) not displaying correctly
  • App becomes unusable after certain updates

Requested features

18 requests
  • Cross-device synchronization (iCloud/cloud backup)
  • Apple Watch complication support
  • Desktop/Mac version with sync capability
  • Multiple lists or categories/folders for organization
  • Recurring task ordering control
Show 13 more
  • Current date display in task list
  • Task editing capability after creation
  • Bulk delete completed tasks feature
  • Calendar app integration with reminders
  • Time-based alarms and notifications
  • Text-to-speech alert options
  • Ability to manually reorder tasks via drag-and-drop
  • Print functionality for notes
  • Task export options
  • Headings/categories to sort different task types
  • One-hour auto-delete option for completed tasks
  • Improved help/documentation
  • Add tasks directly from notification center

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

1 purchases

Do! Premium

One-time1
  • Tip$0.99
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

Questions

Is Do! Premium free?
Do! Premium costs $20.00, and also offers in-app purchases.
Is Calendars free?
Calendars is free to download, with in-app purchases available.
Which has better reviews, Do! Premium or Calendars?
Calendars is rated higher. Do! Premium averages 4.7 out of 5 from 238 ratings, while Calendars averages 4.7 from 123K ratings.
Do Do! Premium or Calendars have ads?
Neither Do! Premium nor Calendars shows ads.
Which is updated more often, Do! Premium or Calendars?
Do! Premium ships an update fortnightly, and Calendars weekly. Most recently, Do! Premium was updated on November 1, 2026 and Calendars on November 1, 2026.

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