# Classroom PDF vs Super Corners™

Classroom PDF and Super Corners™ both sit at 4.5 stars, but that hides the real split: 100% of Classroom PDF's written reviews are positive against 33% of Super Corners™'s. Classroom PDF also leads on update cadence (every 4 months vs every 27 months). Super Corners™'s advantage is price ($1.99 vs $9.99) and in-app purchases (none vs 2). On rating, ratings volume, ads and monetization model there is nothing between them.

Classroom PDF costs $9.99 and Super Corners™ $1.99 up front. Classroom PDF sells 2 one-off in-app purchases. Super Corners™ asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Classroom PDF against 4.5 for Super Corners™. Both are backed by a comparable volume of ratings — 15 and 12 respectively. Written reviews are what separate them: 100% of Classroom PDF's written reviews are positive against 33% of Super Corners™'s.

Classroom PDF ships an update every 4 months, Super Corners™ every 27 months. The most recent releases landed on September 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Classroom PDF | Super Corners™ |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | [4.5 (15 ratings)](https://appshunter.io/ios/app/classroom-pdf/id799652388/reviews) | [4.5 (12 ratings)](https://appshunter.io/ios/app/super-corners/id1371439108/reviews) |
| Number of ratings | **15** | 12 |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 27 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#178** |
| Size | 3 MB | 83 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Qrayon, LLC](https://appshunter.io/developer/354980265) | [Activities for Learning inc.](https://appshunter.io/developer/406078584) |

## What reviewers say

### Classroom PDF

[App page](https://appshunter.io/ios/app/classroom-pdf/id799652388)

This app helps educators annotate and grade PDF documents, worksheets, and slide decks directly on their iPad. It features tools for drawing, pointing, zooming, and wirelessly projecting content to a classroom projector. Organize and share annotated files with students or export them to other apps.

**Highlights:** Annotate PDFs and slides, Grade worksheets, Toggle answer covers, Wireless projection via AirPlay, Draw, point, and zoom tools, Organize files with categories, Share annotated files

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Purchase | Free | one-time |
| Bonus Purchase | Free | one-time |


### Super Corners™

[App page](https://appshunter.io/ios/app/super-corners/id1371439108)

**Currently charting:** #178 Top Paid · Education (US App Store)

A strategic card game where players match colors and add numbers to reach multiples of 5. Unlock score multipliers by creating "corners," "bays," and "windows" with the cards. Compete for high scores with 50 cards per game.

**Highlights:** Number and color matching, Achieve multiples of 5, 4, or 3, Score multipliers for card formations, 50 cards per game, High score storage

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Classroom PDF free?

Classroom PDF costs $9.99, and also offers in-app purchases.

### Is Super Corners™ free?

Super Corners™ costs $1.99, with no in-app purchases.

### Which has better reviews, Classroom PDF or Super Corners™?

Classroom PDF and Super Corners™ are both rated 4.5 out of 5 on the App Store, from 15 and 12 ratings respectively.

### Do Classroom PDF or Super Corners™ have ads?

Neither Classroom PDF nor Super Corners™ shows ads.

### Which is updated more often, Classroom PDF or Super Corners™?

Classroom PDF ships an update every 4 months, and Super Corners™ every 27 months. Most recently, Classroom PDF was updated on September 24, 2026 and Super Corners™ on October 12, 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.*