# EPPENS vs Chemistry Solver

The clearest difference is in-app purchases: EPPENS at none against Chemistry Solver's 3. EPPENS also leads on update cadence (every 4 days vs monthly) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Chemistry Solver sells 3 in-app purchases, starting at $6.99 per 7 days. EPPENS asks for nothing beyond the download.

EPPENS ships an update every 4 days, Chemistry Solver monthly. The most recent releases landed on October 14, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | EPPENS | Chemistry Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (149 ratings)](https://appshunter.io/ios/app/chemistry-solver-ai-scanner/id6736952750/reviews)** |
| Number of ratings | — | **149** |
| Positive reviews | — | 44.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 11 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mahuina Campos](https://appshunter.io/developer/1281208044) | [DAMIEN, NATHANAEL ELLEDGE](https://appshunter.io/developer/1698307994) |

## What reviewers say

### EPPENS

[App page](https://appshunter.io/ios/app/eppens/id6457937776)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chemistry Solver

[App page](https://appshunter.io/ios/app/chemistry-solver-ai-scanner/id6736952750)

This app uses AI to solve chemistry problems by scanning them. It provides step-by-step solutions, allows follow-up questions, and includes helpful chemistry tools. It also acts as a multidisciplinary AI tutor for subjects like math and physics.

**Highlights:** AI-powered problem solving, Scan and solve chemistry problems, Step-by-step solutions, Follow-up questions, Periodic Table and formulas, AI tutor for multiple subjects, History tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chemistry Solver Pro | $6.99 | per 7 days |
| Chemistry Solver Pro | $6.99 | per 7 days |
| Chemistry Solver Pro | $39.99 | per year |


## Frequently asked questions

### Is EPPENS free?

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

### Is Chemistry Solver free?

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

### Do EPPENS or Chemistry Solver have ads?

Neither EPPENS nor Chemistry Solver shows ads.

### Which is updated more often, EPPENS or Chemistry Solver?

EPPENS ships an update every 4 days, and Chemistry Solver monthly. Most recently, EPPENS was updated on October 14, 2026 and Chemistry Solver on October 20, 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.*