# Sigma Planner vs Classify

The clearest difference is update cadence: Sigma Planner at fortnightly against Classify's every 2 months. Sigma Planner also leads on review sentiment (91% vs 76%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sigma Planner holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 570 and 223 respectively. Written reviews point the same way: 91% of Sigma Planner's written reviews are positive against 76% of Classify's.

Sigma Planner ships an update fortnightly, Classify every 2 months. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Sigma Planner | Classify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (570 ratings)](https://appshunter.io/ios/app/sigma-planner/id1106938042/reviews)** | [4.6 (223 ratings)](https://appshunter.io/ios/app/classify-school-planner/id1463780331/reviews) |
| Number of ratings | **570** | 223 |
| Positive reviews | **91.4% of reviews** | 75.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | Free |
| Size | 28 MB | 181 MB |
| Requires iOS | 13.6 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shao-Chi Liang](https://appshunter.io/developer/1106938041) | [Principal Technologies Ltd](https://appshunter.io/developer/1463751962) |

## 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


### Classify

[App page](https://appshunter.io/ios/app/classify-school-planner/id1463780331)

This app helps students organize their academic life by managing homework, schedules, and events. It features collaborative class group chats for effortless information sharing and a focus mode with a Pomodoro timer to boost productivity. Track your progress with detailed statistics and stay on top of your commitments.

**Highlights:** Class group chats for homework and event sharing, Digital homework diary with reminders, Focus mode with Pomodoro timer and study playlists, Intuitive timetable with alternating schedule support, Event and club management with calendar view, Detailed statistics on task completion and study habits

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 User-friendly and intuitive interface
- 💰 Completely free with no in-app purchases
- 📚 Comprehensive homework and task management
- 🎨 Sleek, visually appealing design
- ⏱️ Pomodoro study session feature

**What reviewers complain about**

- 🐛 Frequent app crashes and freezing
- 🐛 Data loss and disappearing tasks/homework
- 🐛 Login and signup screen issues
- 🐛 Homework/task page fails to load
- 🐛 Unable to add tasks or events

**Reported bugs**

- Blank screen after signup
- Username page stuck, cannot proceed past signup
- App fails to open on multiple devices
- Cannot add tasks or events
- Homework/task page fails to load regularly

**Requested features**

- Widget support for home screen
- Custom color themes and personalization
- Two-week timetable (Week A/B) support
- Ability to edit homework after creation
- Custom time slots for lessons


## Frequently asked questions

### Is Sigma Planner free?

Sigma Planner is free to download, with no in-app purchases.

### Is Classify free?

Classify is free to download, with no in-app purchases.

### Which has better reviews, Sigma Planner or Classify?

Sigma Planner is rated higher. Sigma Planner averages 4.8 out of 5 from 570 ratings, while Classify averages 4.6 from 223 ratings.

### Do Sigma Planner or Classify have ads?

Neither Sigma Planner nor Classify shows ads.

### Which is updated more often, Sigma Planner or Classify?

Sigma Planner ships an update fortnightly, and Classify every 2 months. Most recently, Sigma Planner was updated on October 2, 2026 and Classify on October 7, 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.*