# Class Organizer vs PDF Extender

The clearest difference is device support: Class Organizer at 4 against PDF Extender's 2. PDF Extender's advantage is iOS requirement (17.0 vs 26.2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Class Organizer sells 3 in-app purchases, starting at $2.99 per month and PDF Extender sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Class Organizer ships an update every 11 days, PDF Extender every 3 weeks. Both last shipped on November 13, 2026.

## The numbers

| Metric | Class Organizer | PDF Extender |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 81 MB | 7 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jonathan Sauppe](https://appshunter.io/developer/1879071899) | [SB Labs](https://appshunter.io/developer/6808787098) |

## What reviewers say

### Class Organizer

[App page](https://appshunter.io/ios/app/class-organizer/id6759504846)

Manage your school schedule, homework, exams, grades, and notes all in one place. Features include a visual timetable, unlimited note-taking with drawing capabilities, and progress tracking. Collaborate on notes and share assignments easily.

**Highlights:** Visual timetable with drag & drop, Unlimited note-taking and drawing, Homework and exam tracking with reminders, Grade calculation and analysis, Collaborative note-taking, iCloud synchronization across Apple devices

**Features:** Family Sharing, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $2.99 | per month |
| Plus Yearly | $22.99 | per year |
| Plus Lifetime | $34.99 | one-time |


### PDF Extender

[App page](https://appshunter.io/ios/app/pdf-extender/id6808786886)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro freischalten | $2.99 | one-time |


## Frequently asked questions

### Is Class Organizer free?

Class Organizer is free to download, with in-app purchases available.

### Is PDF Extender free?

PDF Extender is free to download, with in-app purchases available.

### Do Class Organizer or PDF Extender have ads?

Neither Class Organizer nor PDF Extender shows ads.

### Which is updated more often, Class Organizer or PDF Extender?

Class Organizer ships an update every 11 days, and PDF Extender every 3 weeks. Most recently, Class Organizer was updated on November 13, 2026 and PDF Extender on November 13, 2026.

---

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