# Classroom PDF vs SimplexLP

The clearest difference is rating: SimplexLP at 5.0 against Classroom PDF's 4.5. SimplexLP also leads on in-app purchases (none vs 2) and price ($3.99 vs $9.99). Classroom PDF's advantage is review sentiment (100% vs 67%) and ratings volume (15 vs 1). On ads, monetization model and iOS requirement there is nothing between them.

Classroom PDF costs $9.99 and SimplexLP $3.99 up front. Classroom PDF sells 2 one-off in-app purchases. SimplexLP asks for nothing beyond the download.

SimplexLP holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Classroom PDF has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of Classroom PDF's written reviews are positive against 67% of SimplexLP's, so the app with the better star average is not the one people write more warmly about.

Classroom PDF ships an update every 4 months, SimplexLP every 12 months. The most recent releases landed on June 7, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Classroom PDF | SimplexLP |
| --- | --- | --- |
| Price | $9.99 | **$3.99** |
| Rating | [4.5 (15 ratings)](https://appshunter.io/ios/app/classroom-pdf/id799652388/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simplexlp/id1114880223/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 12 months |
| Monetization | Paid | Paid |
| Size | 3 MB | 4 MB |
| Requires iOS | 15.6 | **14.1** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Qrayon, LLC](https://appshunter.io/developer/354980265) | [Axel Besser](https://appshunter.io/developer/790706426) |

## 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 |


### SimplexLP

[App page](https://appshunter.io/ios/app/simplexlp/id1114880223)

This app simplifies linear optimization problems with an objective function and constraints. It offers a graphical representation for problems with two variables, making it an ideal learning tool for students and teachers of the Simplex algorithm.

**Highlights:** Solves maximization and minimization problems, Handles unlimited variables and constraints, Supports ≤, ≥, and = inequalities, Provides graphical representation for 2-variable problems, Outputs calculations in fractions or decimals, Offers accurate calculations with fractions

**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 SimplexLP free?

SimplexLP costs $3.99, with no in-app purchases.

### Which has better reviews, Classroom PDF or SimplexLP?

SimplexLP is rated higher. Classroom PDF averages 4.5 out of 5 from 15 ratings, while SimplexLP averages 5.0 from 1 ratings.

### Do Classroom PDF or SimplexLP have ads?

Neither Classroom PDF nor SimplexLP shows ads.

### Which is updated more often, Classroom PDF or SimplexLP?

Classroom PDF ships an update every 4 months, and SimplexLP every 12 months. Most recently, Classroom PDF was updated on June 7, 2026 and SimplexLP on June 5, 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.*