Comparison

Calendars vs Quick Schedule.

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

Quick Schedule.

Organize your academic life with this comprehensive planner. Track classes, assignments, and grades, with automatic GPA calculation and customizable reminders. Features a clean interface to streamline your school schedule and improve efficiency.

Highlights
  • Week-view timetable display
  • Automatic GPA calculation
  • Customizable reminders for classes and tasks
  • Progress tracking for homework and tasks
  • Detailed course and instructor management
  • iCloud and Dropbox backup
Features
Read full description

Quick Schedule is a professional tool to help you track down all courses, classes, tasks and homework, which would be displayed in a week-view. It will auto calculate the GPA after inputting the grade record, and You can set separate reminder for each class, task and homework to make sure you will never miss even one class or task. With user-friendly and tidy readable designed interface, it would make your school life easier and efficiently. Main features - View completion progress of daily classes, homework & tasks at glance. - Manage semesters, holidays, classes types and scales easily. - Easy to add, edit & delete the classes, homework & tasks. - Auto calculate the semester’s GPA and course’s grade. Course & Classes: - Multi-functional course with name, color, credit, scale, homework type and so on. - Multi-functional class with course, type, date range, time range, instructor, location and so on. - Supports setting different color for each course, which makes you easier to find them. - Group the classes/homework/grades by course. - Each course has a well-designed icon. - Separate reminder for each class. Tasks: - Multi-functional tasks with name, due date, location, sub-task, repeat and so on. - Supports dynamic tracking the completion status of the task and its sub-task. - Separate reminder for each task. Homework: - Multi-functional homework with description, due date time, course, homework type, priority, repeat, reminder and so on. - Done a homework easily, jut by one tap. - Customize whether the homework’s grade is based on the point or weight. - Customize the weight of each homework type. - Supports dynamic tracking the completion status of the homework and its earned point. - Organize homework by date, by course, by priority and by type. - Sort homework by completed or uncompleted. - Support tracking the grade of the homework. - Separate reminder for each task. Course Schedule: - Multi-functional schedule with name, school, semester, start date of semester, total weeks of semester, number of daily lessons and so on. - Set up different skins for the schedule. - Grouped by Period/Time. - Supports Preview and print directly with Ariprint. Others: - Manage detailed information of all your instructors. - Customize the week start day. - Passcode Protection. - iCloud and Dropbox Backup & Restore. - Supports horizontal and vertical display. - Supports universal version. If you have any question, please email to yqapps@tom.com.

Screenshots

Calendars4 screens
Quick Schedule.4 screens

Verdict

The call

The clearest difference is review sentiment: Quick Schedule. at 100% against Calendars's 55%. Quick Schedule. also leads on rating (5.0 vs 4.7) and iOS requirement (15.6 vs 18.2). Calendars's advantage is ads (none vs shown) and update cadence (every 11 days vs every 7 months). On price, in-app purchases, monetization model and device support 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 Quick Schedule. sells 5 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Quick Schedule. holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Calendars has 122K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 55% of Calendars's written reviews are positive against 100% of Quick Schedule.'s.

UpkeepUpdate frequency

Calendars ships an update every 11 days, Quick Schedule. every 7 months. The most recent releases landed on September 25, 2026 and June 1, 2026 respectively.

Scorecard7 real differences · 4 level
Calendars versus Quick Schedule.: the parameters behind the verdict, then further details
ParameterCalendarsQuick Schedule.
PriceFreeFree
Rating4.7 (122K ratings)5.0 (1 ratings) — better
Positive reviews55.4% of reviews100.0% of reviews — better
Number of ratings122K — better1
Update frequencyEvery 11 days — betterEvery 7 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#104 — better—
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad, iPod
Requires iOS18.215.6 — better
Further details — not scored
Size407 MB54 MB
Age rating4+4+
DeveloperReaddle Technologies LimitedZhengzhou Yeqiang Technology Co., Ltd

Customer experience

Calendars

All ratings121,639 ratings
Positive93.8%
Neutral3.1%
Negative3.1%
Written reviews1,247 reviews
Positive55.4%
Neutral8.9%
Negative35.7%

Quick Schedule.

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Quick Schedule.

Not enough reviews yet to summarise bugs or requests.

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
5 purchases

Quick Schedule.

Subscriptions5
  • Premium - 1 month7 Days trial$0.991 Month
  • Premium - 1 year3 Months trial$4.991 Year
  • Premium - 6 months1 Month trial$5.496 Months
Show 2 more
  • Premium - 1 year3 Months trial$6.991 Year
  • Premium - 1 year3 Months trial$9.991 Year

Questions

Is Calendars free?
Calendars is free to download, with in-app purchases available.
Is Quick Schedule. free?
Quick Schedule. is free to download, with in-app purchases available.
Which has better reviews, Calendars or Quick Schedule.?
Quick Schedule. is rated higher. Calendars averages 4.7 out of 5 from 122K ratings, while Quick Schedule. averages 5.0 from 1 ratings.
Do Calendars or Quick Schedule. have ads?
Quick Schedule. shows ads; Calendars does not.
Which is updated more often, Calendars or Quick Schedule.?
Calendars ships an update every 11 days, and Quick Schedule. every 7 months. Most recently, Calendars was updated on September 25, 2026 and Quick Schedule. on June 1, 2026.

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