# Sigma Planner vs Assignment Planner

The clearest difference is in-app purchases: Sigma Planner at none against Assignment Planner's 1. Sigma Planner also leads on review sentiment (91% vs 57%) and update cadence (fortnightly vs every 5 weeks). On price, rating, ads and device support there is nothing between them.

Both are free to download. Assignment Planner sells 1 one-off in-app purchase. Sigma Planner asks for nothing beyond the download.

Sigma Planner holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 570 and 138 respectively. Written reviews point the same way: 91% of Sigma Planner's written reviews are positive against 57% of Assignment Planner's.

Sigma Planner ships an update fortnightly, Assignment Planner every 5 weeks. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Sigma Planner | Assignment Planner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (570 ratings)](https://appshunter.io/ios/app/sigma-planner/id1106938042/reviews)** | [4.6 (138 ratings)](https://appshunter.io/ios/app/assignment-planner/id1534441344/reviews) |
| Number of ratings | **570** | 138 |
| Positive reviews | **91.4% of reviews** | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 28 MB | 7 MB |
| Requires iOS | **13.6** | 15.0 |
| Devices | iPhone, iPad, iPod, Mac | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Shao-Chi Liang](https://appshunter.io/developer/1106938041) | [John Zeglarski](https://appshunter.io/developer/1253194900) |

## 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


### Assignment Planner

[App page](https://appshunter.io/ios/app/assignment-planner/id1534441344)

Easily track homework and assignments with a planner focused on due dates. Receive timely notifications to ensure you never miss a deadline. This app syncs across all your devices, including Apple Watch, for seamless organization.

**Highlights:** Track homework and assignments, Focus on due dates, Plan ahead for deadlines, Receive assignment notifications, Syncs across all devices, Mark assignments as complete on Apple Watch

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Personality Pack | $1.49 | one-time |

**What reviewers like**

- 👍 Simple and intuitive user interface
- 📚 Effective assignment and exam tracking
- 🎨 Color-coded subjects for organization
- 🔔 Customizable notification settings
- 💰 Free to use with no paywall

**What reviewers complain about**

- 🐛 Persistent notification delivery failures
- 🐛 Date picker freezes and becomes unresponsive
- 🐛 App crashes when setting due dates
- 🐛 Sync issues across devices
- ⚠️ Notifications turn off unexpectedly

**Reported bugs**

- Date picker unresponsive on mobile and desktop
- App freezes when modifying assignment due dates
- Notifications fail to send despite being enabled
- Notifications disable themselves after being set
- Forced app crashes requiring computer restart

**Requested features**

- Cross-device synchronization via iCloud
- Apple Watch app support for adding assignments
- Recurring/repeating assignments feature
- Calendar view integration
- Subject folder organization by year/semester


## Frequently asked questions

### Is Sigma Planner free?

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

### Is Assignment Planner free?

Assignment Planner is free to download, with in-app purchases available.

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

Sigma Planner is rated higher. Sigma Planner averages 4.8 out of 5 from 570 ratings, while Assignment Planner averages 4.6 from 138 ratings.

### Do Sigma Planner or Assignment Planner have ads?

Neither Sigma Planner nor Assignment Planner shows ads.

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

Sigma Planner ships an update fortnightly, and Assignment Planner every 5 weeks. Most recently, Sigma Planner was updated on October 2, 2026 and Assignment Planner on October 15, 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.*