# Classroom PDF vs Multiplication Ring

The clearest difference is price: Multiplication Ring at $1.99 against Classroom PDF's $9.99. Multiplication Ring also leads on in-app purchases (none vs 2) and device support (3 vs 1). Classroom PDF's advantage is update cadence (every 4 months vs every 10 months). On ads there is nothing between them.

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

Classroom PDF ships an update every 4 months, Multiplication Ring every 10 months. The most recent releases landed on September 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Classroom PDF | Multiplication Ring |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | **[4.5 (15 ratings)](https://appshunter.io/ios/app/classroom-pdf/id799652388/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Monetization | Paid | — |
| Size | 3 MB | 69 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 |


### Multiplication Ring

[App page](https://appshunter.io/ios/app/multiplication-ring/id6590630320)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Classroom PDF free?

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

### Is Multiplication Ring free?

Multiplication Ring costs $1.99, with no in-app purchases.

### Do Classroom PDF or Multiplication Ring have ads?

Neither Classroom PDF nor Multiplication Ring shows ads.

### Which is updated more often, Classroom PDF or Multiplication Ring?

Classroom PDF ships an update every 4 months, and Multiplication Ring every 10 months. Most recently, Classroom PDF was updated on September 24, 2026 and Multiplication Ring 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.*