# Minute Chem vs Engineering Formulas

The clearest difference is in-app purchases: Minute Chem at none against Engineering Formulas's 3. Minute Chem also leads on iOS requirement (12.0 vs 15.1). Engineering Formulas's advantage is update cadence (every 2 months vs every 52 months). On price, ads and device support there is nothing between them.

Both are free to download. Engineering Formulas sells 3 in-app purchases, starting at $4.99 per 7 days. Minute Chem asks for nothing beyond the download.

Minute Chem ships an update every 52 months, Engineering Formulas every 2 months. The most recent releases landed on October 13, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Minute Chem | Engineering Formulas |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 52 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 97 MB | 45 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Numeration Technologies Inc.](https://appshunter.io/developer/1330346901) | [Mobin Akhter](https://appshunter.io/developer/1812505286) |

## What reviewers say

### Minute Chem

[App page](https://appshunter.io/ios/app/minute-chem/id1344643522)

An educational chemistry game designed to make learning fun. Balance chemical compounds and equations while unlocking achievements. Ideal for high school students or anyone needing a chemistry refresher.

**Highlights:** Balance chemical compounds, Balance chemical equations, Unlock achievements, Educational content, Suitable for grades 9-10

**Features:** macOS Compatibility

**In-app purchases:** none


### Engineering Formulas

[App page](https://appshunter.io/ios/app/engineering-formulas-engiref/id6758258119)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $29.99 | per year |
| Lifetime Access | $54.99 | one-time |


## Frequently asked questions

### Is Minute Chem free?

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

### Is Engineering Formulas free?

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

### Do Minute Chem or Engineering Formulas have ads?

Neither Minute Chem nor Engineering Formulas shows ads.

### Which is updated more often, Minute Chem or Engineering Formulas?

Minute Chem ships an update every 52 months, and Engineering Formulas every 2 months. Most recently, Minute Chem was updated on October 13, 2026 and Engineering Formulas 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.*