# Formula & Units vs AR Orbits

The clearest difference is price: AR Orbits at Free against Formula & Units's $3.99. AR Orbits also leads on iOS requirement (13.0 vs 16.0). Formula & Units's advantage is update cadence (every 2 months vs every 18 months). On ads, in-app purchases and device support there is nothing between them.

AR Orbits is free to download; Formula & Units costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Formula & Units ships an update every 2 months, AR Orbits every 18 months. The most recent releases landed on August 20, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Formula & Units | AR Orbits |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[4.9 (11 ratings)](https://appshunter.io/ios/app/ar-orbits/id1470324501/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 18 months |
| Monetization | — | Free |
| Size | 1 MB | 58 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Turner Thornberry](https://appshunter.io/developer/1393266702) |

## 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


### AR Orbits

[App page](https://appshunter.io/ios/app/ar-orbits/id1470324501)

Explore the solar system and understand satellite mechanics through augmented reality. This app simplifies complex astrophysics concepts, allowing users to create and plot their own orbits, making rocket science accessible for learning and homework.

**Highlights:** Augmented reality exploration, Satellite mechanics simulation, Orbit plotting and creation, Astrophysics homework assistance, Solar system discovery

**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 AR Orbits free?

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

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

Neither Formula & Units nor AR Orbits shows ads.

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

Formula & Units ships an update every 2 months, and AR Orbits every 18 months. Most recently, Formula & Units was updated on August 20, 2026 and AR Orbits on June 1, 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.*