# CPU8 vs RustAcademy

The clearest difference is price: CPU8 at Free against RustAcademy's $6.99. CPU8 also leads on iOS requirement (12.0 vs 16.4). On update cadence, ads, in-app purchases and device support there is nothing between them.

CPU8 is free to download; RustAcademy costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CPU8 ships an update every 3 months, RustAcademy every 6 weeks. The most recent releases landed on September 25, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | CPU8 | RustAcademy |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[4.7 (14 ratings)](https://appshunter.io/ios/app/cpu8/id1448776028/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | **Free** | Paid |
| Size | 163 MB | 52 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cordova Bay Entertainment Group, Inc](https://appshunter.io/developer/1448776027) | [SimTeCon GmbH](https://appshunter.io/developer/1761797043) |

## What reviewers say

### CPU8

[App page](https://appshunter.io/ios/app/cpu8/id1448776028)

Explore the inner workings of an 8-bit computer through simulation. Write, assemble, and run programs to understand computer instructions and their relationships with hardware components. Includes an assembler, sample programs, and educational resources.

**Highlights:** 8-bit computer simulator, Built-in assembler with manual, Control clock speed and single-step execution, 16 instructions and 3 pseudo-instructions, 7 sample assembler programs, Links to Ben Eater videos, History of computing content

**Features:** macOS Compatibility

**In-app purchases:** none


### RustAcademy

[App page](https://appshunter.io/ios/app/rustacademy/id6740005880)

Learn Rust programming through focused, bite-sized lessons and daily challenges. Master core concepts, algorithms, and syntax with guided practice and code reading. Ideal for developers seeking a deeper understanding of Rust.

**Highlights:** Bite-sized Rust lessons, Guided practice and code reading, Daily recall challenges, Structured algorithm track, Code completion exercises, Favorite module saving

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CPU8 free?

CPU8 is free to download, with no in-app purchases.

### Is RustAcademy free?

RustAcademy costs $6.99, with no in-app purchases.

### Do CPU8 or RustAcademy have ads?

Neither CPU8 nor RustAcademy shows ads.

### Which is updated more often, CPU8 or RustAcademy?

CPU8 ships an update every 3 months, and RustAcademy every 6 weeks. Most recently, CPU8 was updated on September 25, 2026 and RustAcademy on October 3, 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.*