Comparison

Sigma Planner vs Smart Timetable

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

Head to head
About

Sigma Planner

This app helps students organize their academic life by tracking classes, tasks, and schedules. It offers customizable features, cross-device syncing, and home screen widgets for easy access to important information.

Highlights
  • Organize courses by semester
  • Create and manage tasks with priority
  • Flexible class schedule support
  • Home screen widgets for quick access
  • iCloud sync across devices
  • Customizable themes and app icons
Read full description

Sigma Planner is the perfect companion app for your academics that will help you track your classes and tasks with ease. It features a wide range of features to help you stay organized, as well as a beautiful design that is smooth, customizable, and adaptive for every device. With Sigma Planner, you will never need to carry your school planner anymore; all your planner and school information is available on your iPhone, iPad, and Mac. ORGANIZATION Sigma Planner offers a wide variety of features to organize your academic life. You should not need to clear or clutter your timetable every time you move onto the next semester. Sigma Planner offers the ability to organize your courses by semesters, which will allow you to retain records of all your past classes and assignments without having to delete them. TASKS Tasks are the core of any type of planner. In Sigma Planner, tasks can be created for a course, on a date, with a different task type, priority, and more. Tasks should always be easy to find; with the built-in search and filter features, you will never lose a task. CLASS SCHEDULES Sigma Planner is fully equipped to handle the many different schedule types around the world. The app is very flexible supports time-based, period-based, and block-based schedules, as well as supporting biweekly schedules, and late start or early end dates for specific classes. You can also enable class notifications to receive alerts before your classes occur. WIDGETS On iOS 14, Sigma Planner offers three kinds of home screen widgets which allow you to quickly glance at your planner data. You can quickly view your up next classes and tasks, focus on a specific course, or display your current week's timetable right from your home screen. Each widget also contain customization options to display just the information you want. iCLOUD SYNC Your data is always up to date across your devices through iCloud. You can edit a task on your iPhone, and you will immediately see them on iPad or Mac as soon as you hit save. There are no logins; no external accounts; it just works. FLEXIBILITY There are many built-in customizations available in Sigma Planner, including: dark mode, custom accent colours, display styles for tasks and courses, notification customizations, and more. The app also includes a handful of custom app icons to really spice up your home screen! DESIGN The app has a clean, simple, and intuitive interface. On top of that, Sigma Planner comes with 60 course icons to customize your classes, all on top of the customizations you get with the app. These course icons are also available as an iMessage sticker pack that comes with the app so you can share them with your friends! FOR iPAD Sigma Planner also has additional features for iPadOS users with an interface that is better suited for the larger iPad screen size, while at the same time, remain adaptive in supporting split screen multitasking and multiple-windows. Additionally, you can even drag a course to show the course detail in a separate window. Sigma Planner also offers support for trackpads and mice. ACCESSIBILITY Accessibility is one of the most powerful features of the iPhone, iPad, and Mac. Sigma Planner supports system accessibility features like Voice Over and Voice Control. Moreover, the app supports Dynamic Type, which scales text based on your system's Dynamic Type settings. SECURITY Protecting your tasks and course information has never been easier. Unlike your paper agenda, Sigma Planner has the ability to lock the app with a passcode, and allow your to easily unlock with Touch ID and Face ID on available devices.

About

Smart Timetable

Manage multiple class schedules, assignments, and tasks with notifications and reminders. Sync across devices and share with others. Track your progress with insightful charts and utilize convenient widgets for quick access.

Highlights
  • Multiple schedule management
  • Rotating schedule support
  • Lesson and assignment notifications
  • Today widget with countdown
  • iCloud and Apple Calendar sync
  • Apple Watch app and widget
  • Siri Shortcuts and Voice commands
Features
Read full description

Class schedule for students, teachers and parents. Features: • Friendly support. • Multiple schedules at once. • Rotating schedule support. • Schedules for 1, 2, 3, or 4 weeks. • Today widget with countdown timer. • iCloud schedule synchronization. • Lesson and assignment notifications. • Photos, videos, audio for your tasks. • Application and widget for Apple Watch. • Sending schedules to friends and coworkers. • Chart with useful info about your schedules. • Sync schedules with Apple Calendar. • Siri Shortcuts and Voice commands. • Support iPhone, iPad, Apple Watch. • Available for your Mac. This application helps you create as many schedules as you need for anything you might be planning. School, college, gym - you can easily manage it all in one application: Smart Timetable. User-friendly application widgets display relevant information - whether it’s the current lesson, next lesson, or tomorrow's lesson. The widget automatically switches to the next school day when today's classes are over. The current lesson time will show you how much time is left until it is completed. The timer is available on the Today widget, as well as on the Apple Watch face. Developer's website: https://smart-timetable.app Privacy policy: https://smart-timetable.app/docs/privacy-policy.html Terms of use: https://smart-timetable.app/docs/terms-of-use.html

Screenshots

Sigma Planner4 screens
Smart Timetable4 screens

Verdict

The call

The clearest difference is in-app purchases: Sigma Planner at none against Smart Timetable's 5. Sigma Planner also leads on rating (4.8 vs 4.6) and review sentiment (91% vs 80%). Smart Timetable's advantage is ratings volume (3.5K vs 570). On price, update cadence, ads 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. Smart Timetable sells 5 in-app purchases, starting at $0.99 per month. Sigma Planner asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sigma Planner holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Smart Timetable has 3.5K ratings behind it against 570, so its average is the more settled of the two. Written reviews point the same way: 91% of Sigma Planner's written reviews are positive against 80% of Smart Timetable's.

UpkeepUpdate frequency

Sigma Planner ships an update fortnightly, Smart Timetable weekly. The most recent releases landed on September 11, 2026 and October 1, 2026 respectively.

Scorecard6 real differences · 4 level
Sigma Planner versus Smart Timetable: the parameters behind the verdict, then further details
ParameterSigma PlannerSmart Timetable
PriceFreeFree
Rating4.8 (570 ratings) — better4.6 (3.5K ratings)
Positive reviews91.4% of reviews — better80.4% of reviews
Number of ratings5703.5K — better
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, MaciPhone, iPad, Mac, Apple Watch
Requires iOS13.6 — better17.0
Further details — not scored
Size28 MB75 MB
Age rating4+4+
DeveloperShao-Chi LiangDenis Kravcov

Customer experience

Sigma Planner

All ratings570 ratings
Positive96.8%
Neutral2.8%
Negative0.4%
Written reviews139 reviews
Positive91.4%
Neutral6.5%
Negative2.2%

Smart Timetable

All ratings3,456 ratings
Positive90.7%
Neutral3.8%
Negative5.5%
Written reviews1,977 reviews
Positive80.4%
Neutral7.2%
Negative12.4%

User reviews

Sigma Planner

From 570 App Store ratings

What we love

  • 👍 Highly customizable
  • 🚀 Seamless syncing across devices
  • 💡 Comprehensive features for students
  • 👍 Clean and intuitive interface
  • 🚀 Completely free with no ads

Room to improve

  • 🐛 Calendar and date picker issues
  • 🐛 Occasional app crashes
  • 🐛 Courses/schedule not always displaying correctly

Smart Timetable

From 3.5K App Store ratings

What we love

  • 🚀 Helpful for organizing schedule
  • 👍 Easy to use and intuitive
  • 💡 Useful widgets and countdown timers
  • 👍 Customizable colors for classes
  • 👍 Syncs across devices

Room to improve

  • 🐛 Bugs with widget and sync issues
  • 🐛 Deletes schedules and tasks after updates
  • 🔒 Notifications only available in paid version
  • 🐛 Difficulty setting up recurring tasks
  • 🐛 Confusing to navigate for some users

Bugs and requests

Sigma Planner

Reported bugs

3 issues
  • Calendar not showing all months
  • Reminders not working as expected
  • Syncing issues between devices

Requested features

4 requests
  • Ability to set recurring tasks/assignments
  • Integration with other calendars (e.g. Google Calendar)
  • More visual indicators for completed tasks
  • Option to rearrange course order

Smart Timetable

Reported bugs

4 issues
  • Schedules disappearing after updates
  • Widgets not working or showing incorrect information
  • Sync issues between devices
  • Crashes when trying to create new schedules

Requested features

5 requests
  • Option to select multiple days for classes
  • Ability to set custom reminders and due dates for tasks
  • Weekly/monthly calendar view
  • Integration with other calendar/task apps
  • More customization options (colors, backgrounds, etc.)

In-app purchases

None

Sigma Planner

No in-app purchases

5 purchases

Smart Timetable

Subscriptions3
  • Upgrade to Pro - 1 month7 Days trial$0.991 Month
  • Class Schedule Premium$0.991 Month
  • Class Schedule Premium$7.991 Year
One-time2
  • Schedule Planner PRO$2.99
  • Schedule Planner Premium$7.99

Questions

Is Sigma Planner free?
Sigma Planner is free to download, with no in-app purchases.
Is Smart Timetable free?
Smart Timetable is free to download, with in-app purchases available.
Which has better reviews, Sigma Planner or Smart Timetable?
Sigma Planner is rated higher. Sigma Planner averages 4.8 out of 5 from 570 ratings, while Smart Timetable averages 4.6 from 3.5K ratings.
Do Sigma Planner or Smart Timetable have ads?
Neither Sigma Planner nor Smart Timetable shows ads.
Which is updated more often, Sigma Planner or Smart Timetable?
Sigma Planner ships an update fortnightly, and Smart Timetable weekly. Most recently, Sigma Planner was updated on September 11, 2026 and Smart Timetable on October 1, 2026.

Other comparisons