Comparison

Calendars vs Zoho ToDo

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 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

About

Zoho ToDo

Manage personal and work tasks with a clean interface, Kanban boards, and social-style collaboration. Features include agenda views, priority setting, and mobile-exclusive tools like voice commands and document scanning.

Highlights
  • Agenda view for daily, weekly, monthly tasks
  • Priority setting for tasks
  • Kanban boards for visual task organization
  • Social-media style collaboration
  • Voice command task creation
  • Scan documents to create tasks
  • Widgets for quick access
Features
Read full description

Zoho ToDo is the ultimate task management application for all your personal and work tasks. With clean views, personal and group tasks, categories, Kanban boards, social-media style collaboration, and mobile-exclusive features, you'll start enjoying every task you do! Install Zoho ToDo today and enjoy the following benefits: First things first: prioritize better When you start your day, the last thing you want is a bunch of tasks staring at you. This is why Zoho ToDo has a neat agenda view to help you visualize your work items by day, week, or month. Your tasks can also be assigned a priority so that you know just what to focus on immediately. Light-weighted yet comprehensive: With a simple and intuitive interface, Zoho ToDo is designed to manage your everyday tasks with precision and ease. You can create tasks, assign them to people, track them with proper due dates, categorize them for quick filtering, and exchange views through comments and likes. Visualise with Kanban boards While the list view is a convenient and standard way to visualize your tasks or checklists, we don't stop with that. Zoho ToDo comes with interactive Kanban boards that help you view tasks neatly bundled according to category, groups, priority, due dates, status, or tags. You can drag and drop Kanban cards across rows for quick reorganization. Get more done without doing much! Zoho ToDo has features custom-made for your mobile so that you can do more even when you're on the move! You can add tasks with simple voice commands, scan a physical document to convert it into tasks instantly, or access work items easily by simply tapping on the handy widgets. Stay in perfect sync. If you're someone who is constantly on the move, or you just prefer using your mobile app more than the web, you can easily switch between one to the other, because your tasks are perfectly synced across your devices. Your personal tasks also sync with your Calendar so that your schedules reflect all the time you're spending on your tasks! Got questions? Write to todo@zohomobile.com, and let's talk! Privacy Policy and Terms & Conditions: - https://www.zoho.com/privacy.html - https://www.zoho.com/terms.html

Screenshots

Calendars4 screens
Zoho ToDo4 screens

Verdict

The call

The clearest difference is review sentiment: Calendars at 56% against Zoho ToDo's 9%. Calendars also leads on rating (4.7 vs 2.8) and ratings volume (123K vs 17). Zoho ToDo's advantage is in-app purchases (none vs 10). On price, ads and iOS requirement 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 10 in-app purchases, starting at $3.99 per month. Zoho ToDo asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calendars holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: Calendars has 123K ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 56% of Calendars's written reviews are positive against 9% of Zoho ToDo's.

UpkeepUpdate frequency

Calendars ships an update weekly, Zoho ToDo every 5 weeks. The most recent releases landed on November 12, 2026 and November 3, 2026 respectively.

Scorecard8 real differences · 3 level
Calendars versus Zoho ToDo: the parameters behind the verdict, then further details
ParameterCalendarsZoho ToDo
PriceFreeFree
Rating4.7 (123K ratings) — better2.8 (17 ratings)
Positive reviews56.0% of reviews — better9.1% of reviews
Number of ratings123K — better17
Update frequencyWeekly — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
Best chart rank#116 — better—
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad
Requires iOS18.217.6 — better
Further details — not scored
Size414 MB92 MB
Age rating4+4+
DeveloperReaddle Technologies LimitedZoho Corporation

Customer experience

Calendars

All ratings122,726 ratings
Positive93.8%
Neutral3.1%
Negative3.1%
Written reviews1,313 reviews
Positive56.0%
Neutral8.7%
Negative35.3%

Zoho ToDo

All ratings15 ratings
Positive33.3%
Neutral13.3%
Negative53.3%
Written reviews33 reviews
Positive9.1%
Neutral33.3%
Negative57.6%

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

Zoho ToDo

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Calendars

Subscriptions6
  • 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 3 more
  • Calendars PRO 1 Year7 Days trial$19.991 Year
  • Calendars PRO 1 Year1 Year trial$19.991 Year
  • Calendars PRO 1 Year7 Days trial$21.991 Year
One-time4
  • Smart Input Upgrade$1.99
  • My schedule planner, Organizer$6.99
  • Full Pack$12.99
Show 1 more
  • Recurring Events$31.99
None

Zoho ToDo

No in-app purchases

Questions

Is Calendars free?
Calendars is free to download, with in-app purchases available.
Is Zoho ToDo free?
Zoho ToDo is free to download, with no in-app purchases.
Which has better reviews, Calendars or Zoho ToDo?
Calendars is rated higher. Calendars averages 4.7 out of 5 from 123K ratings, while Zoho ToDo averages 2.8 from 17 ratings.
Do Calendars or Zoho ToDo have ads?
Neither Calendars nor Zoho ToDo shows ads.
Which is updated more often, Calendars or Zoho ToDo?
Calendars ships an update weekly, and Zoho ToDo every 5 weeks. Most recently, Calendars was updated on November 12, 2026 and Zoho ToDo on November 3, 2026.

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