# Chemguy vs SimpleTools

The clearest difference is update cadence: SimpleTools at weekly against Chemguy's every 41 months. Chemguy's advantage is monetization model (free vs freemium) and ratings volume (4 vs 1). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Chemguy sells 1 one-off in-app purchase and SimpleTools sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Chemguy against 5.0 for SimpleTools. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Chemguy ships an update every 41 months, SimpleTools weekly. The most recent releases landed on October 15, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Chemguy | SimpleTools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/chemguy/id1473143126/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/simpletools-chemistry-solver/id6762289966/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 41 months | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 72 MB | 15 MB |
| Requires iOS | **15.6** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rob Lederer](https://appshunter.io/developer/1472015812) | [Yevhenii Kniaziev](https://appshunter.io/developer/1878685835) |

## 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 |


### SimpleTools

[App page](https://appshunter.io/ios/app/simpletools-chemistry-solver/id6762289966)

Instantly solve chemistry problems with AI-powered, step-by-step explanations. Snap a photo of any chemistry question and receive a clear, structured solution in seconds, helping students and parents understand problem-solving processes.

**Highlights:** AI-powered problem solving, Photo scanning for problems, Step-by-step explanations, Supports various chemistry topics, Unlimited scans with premium

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $4.99 | per 7 days |
| Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is Chemguy free?

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

### Is SimpleTools free?

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

### Which has better reviews, Chemguy or SimpleTools?

Chemguy and SimpleTools are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do Chemguy or SimpleTools have ads?

Neither Chemguy nor SimpleTools shows ads.

### Which is updated more often, Chemguy or SimpleTools?

Chemguy ships an update every 41 months, and SimpleTools weekly. Most recently, Chemguy was updated on October 15, 2026 and SimpleTools on October 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*