# Equation vs AI Chemistry

The clearest difference is price: AI Chemistry at Free against Equation's $1.99. Equation's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence and device support there is nothing between them.

AI Chemistry is free to download; Equation costs $1.99 up front. AI Chemistry sells 1 one-off in-app purchase. Equation asks for nothing beyond the download.

Equation ships an update monthly, AI Chemistry every 3 weeks. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Equation | AI Chemistry |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 30 MB | 23 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [Harjeet Kaur](https://appshunter.io/developer/1734633125) |

## What reviewers say

### Equation

[App page](https://appshunter.io/ios/app/equation-solver-pro/id1618982773)

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

**In-app purchases:** none


### AI Chemistry

[App page](https://appshunter.io/ios/app/ai-chemistry/id6756913869)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Equation free?

Equation costs $1.99, with no in-app purchases.

### Is AI Chemistry free?

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

### Do Equation or AI Chemistry have ads?

AI Chemistry shows ads; Equation does not.

### Which is updated more often, Equation or AI Chemistry?

Equation ships an update monthly, and AI Chemistry every 3 weeks. Most recently, Equation was updated on November 7, 2026 and AI Chemistry on October 30, 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.*