# Formula & Units vs Molecules AR

The clearest difference is update cadence: Formula & Units at every 2 months against Molecules AR's every 20 months. Molecules AR's advantage is price ($1.99 vs $3.99) and iOS requirement (12.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Formula & Units costs $3.99 and Molecules AR $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Formula & Units ships an update every 2 months, Molecules AR every 20 months. The most recent releases landed on August 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Formula & Units | Molecules AR |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 20 months |
| Size | 1 MB | 27 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### Formula & Units

[App page](https://appshunter.io/ios/app/formula-and-units/id1255813016)

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

**In-app purchases:** none


### Molecules AR

[App page](https://appshunter.io/ios/app/molecules-ar/id1334256889)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Formula & Units free?

Formula & Units costs $3.99, with no in-app purchases.

### Is Molecules AR free?

Molecules AR costs $1.99, with no in-app purchases.

### Do Formula & Units or Molecules AR have ads?

Neither Formula & Units nor Molecules AR shows ads.

### Which is updated more often, Formula & Units or Molecules AR?

Formula & Units ships an update every 2 months, and Molecules AR every 20 months. Most recently, Formula & Units was updated on August 20, 2026 and Molecules AR on September 18, 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.*