# Chemguy vs Mentor Union

The clearest difference is in-app purchases: Mentor Union at none against Chemguy's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Chemguy sells 1 one-off in-app purchase. Mentor Union asks for nothing beyond the download.

## The numbers

| Metric | Chemguy | Mentor Union |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/chemguy/id1473143126/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 41 months | — |
| Monetization | Free | — |
| Size | 72 MB | 34 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Rob Lederer](https://appshunter.io/developer/1472015812) | [Shanti Informatics](https://appshunter.io/developer/1713694931) |

## What reviewers say

### Chemguy

[App page](https://appshunter.io/ios/app/chemguy/id1473143126)

Master high school, AP, IB, and first-year university chemistry with over 200 video lessons, comprehensive notes, and over 1000 practice problems. Interactive quizzes and unit exams reinforce learning, with direct messaging support for personalized help.

**Highlights:** Over 200 video lessons, Comprehensive classroom notes, 1000+ practice problems, 100+ interactive quizzes, Unit exams, Direct messaging support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete Chemguy Course Entry | Free | one-time |


### Mentor Union

[App page](https://appshunter.io/ios/app/mentor-union/id6778766823)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chemguy free?

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

### Is Mentor Union free?

Mentor Union is free to download, with no in-app purchases.

### Do Chemguy or Mentor Union have ads?

Neither Chemguy nor Mentor Union shows ads.

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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.*