# Sigma Planner vs Smart Timetable

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.

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.

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.

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

## The numbers

| Metric | Sigma Planner | Smart Timetable |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (570 ratings)](https://appshunter.io/ios/app/sigma-planner/id1106938042/reviews)** | [4.6 (3.5K ratings)](https://appshunter.io/ios/app/smart-timetable-study-planner/id1278473923/reviews) |
| Number of ratings | 570 | **3.5K** |
| Positive reviews | **91.4% of reviews** | 80.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 28 MB | 75 MB |
| Requires iOS | **13.6** | 17.0 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, Mac, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Shao-Chi Liang](https://appshunter.io/developer/1106938041) | [Denis Kravcov](https://appshunter.io/developer/1268388071) |

## What reviewers say

### Sigma Planner

[App page](https://appshunter.io/ios/app/sigma-planner/id1106938042)

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

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/smart-timetable-study-planner/id1278473923)

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:** Family Sharing, Apple Watch app

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro - 1 month | $0.99 | per month |
| Class Schedule Premium | $0.99 | per month |
| Class Schedule Premium | $7.99 | per year |
| Schedule Planner PRO | $2.99 | one-time |
| Schedule Planner Premium | $7.99 | one-time |

**What reviewers like**

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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

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

**Requested features**

- 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.)


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*