# Stoichiometric equations vs Stoichiometry

The clearest difference is in-app purchases: Stoichiometric equations at none against Stoichiometry's 1. Stoichiometric equations also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Stoichiometry sells 1 one-off in-app purchase. Stoichiometric equations asks for nothing beyond the download.

## The numbers

| Metric | Stoichiometric equations | Stoichiometry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 17 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Peter Sauer](https://appshunter.io/developer/1789152060) | [玉立 蔡](https://appshunter.io/developer/6798914513) |

## What reviewers say

### Stoichiometric equations

[App page](https://appshunter.io/ios/app/stoichiometric-equations/id6740244756)

**Features:** Vision Pro support

**In-app purchases:** none


### Stoichiometry

[App page](https://appshunter.io/ios/app/stoichiometry-lab-calc/id6798973130)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Permanent Reagent Library Unlock | $0.99 | one-time |


## Frequently asked questions

### Is Stoichiometric equations free?

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

### Is Stoichiometry free?

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

### Do Stoichiometric equations or Stoichiometry have ads?

Neither Stoichiometric equations nor Stoichiometry 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.*