# Classroom PDF vs NumWorks Scientific

The clearest difference is price: NumWorks Scientific at Free against Classroom PDF's $9.99. NumWorks Scientific also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 2). Classroom PDF's advantage is ratings volume (16 vs 1). On review sentiment and ads there is nothing between them.

NumWorks Scientific is free to download; Classroom PDF costs $9.99 up front. Classroom PDF sells 2 one-off in-app purchases. NumWorks Scientific asks for nothing beyond the download.

NumWorks Scientific holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Classroom PDF has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Classroom PDF ships an update every 4 months, NumWorks Scientific monthly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Classroom PDF | NumWorks Scientific |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.5 (16 ratings)](https://appshunter.io/ios/app/classroom-pdf/id799652388/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/numworks-scientific/id6760716770/reviews)** |
| Number of ratings | **16** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 3 MB | 3 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Qrayon, LLC](https://appshunter.io/developer/354980265) | [NumWorks](https://appshunter.io/developer/1456585806) |

## 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 |


### NumWorks Scientific

[App page](https://appshunter.io/ios/app/numworks-scientific/id6760716770)

This free scientific calculator app offers a user-friendly interface for learning math. It provides advanced calculation features, equation solving, and function graphing, developed in collaboration with educators.

**Highlights:** Fraction, square root, GCD, and trigonometric calculations, Statistical result calculation, Function definition and value tables, Equation and system of equations solver, Intuitive and evolutive interface

**Features:** 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 NumWorks Scientific free?

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

### Which has better reviews, Classroom PDF or NumWorks Scientific?

NumWorks Scientific is rated higher. Classroom PDF averages 4.5 out of 5 from 16 ratings, while NumWorks Scientific averages 5.0 from 1 ratings.

### Do Classroom PDF or NumWorks Scientific have ads?

Neither Classroom PDF nor NumWorks Scientific shows ads.

### Which is updated more often, Classroom PDF or NumWorks Scientific?

Classroom PDF ships an update every 4 months, and NumWorks Scientific monthly. Most recently, Classroom PDF was updated on October 23, 2026 and NumWorks Scientific on October 24, 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.*