# CPU8 vs Barber Exam Center Rocket Prep

The clearest difference is in-app purchases: CPU8 at none against Barber Exam Center Rocket Prep's 7. CPU8 also leads on iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Barber Exam Center Rocket Prep sells 7 in-app purchases, starting at $9.99 per 7 days. CPU8 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | CPU8 | Barber Exam Center Rocket Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (15 ratings)](https://appshunter.io/ios/app/cpu8/id1448776028/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | — |
| Size | 163 MB | 47 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cordova Bay Entertainment Group, Inc](https://appshunter.io/developer/1448776027) | [Darya Pyzhyk](https://appshunter.io/developer/1799009188) |

## 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


### Barber Exam Center Rocket Prep

[App page](https://appshunter.io/ios/app/barber-exam-center-rocket-prep/id6744277268)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Barber weekly subscription | $9.99 | per 7 days |
| Barber Monthly Full Access | $24.99 | per month |
| Barber monthly subscription | $24.99 | per month |
| Barber exam simulator 1 Try | $4.99 | one-time |
| Barber exam simulator 3 Tries | $9.99 | one-time |
| Barber exam simulator 5 Tries | $14.99 | one-time |
| Barber exam simulator 7 Try | $19.99 | one-time |


## Frequently asked questions

### Is CPU8 free?

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

### Is Barber Exam Center Rocket Prep free?

Barber Exam Center Rocket Prep is free to download, with in-app purchases available.

### Do CPU8 or Barber Exam Center Rocket Prep have ads?

Neither CPU8 nor Barber Exam Center Rocket Prep shows ads.

### Which is updated more often, CPU8 or Barber Exam Center Rocket Prep?

CPU8 ships an update every 3 months, and Barber Exam Center Rocket Prep every 3 months. Most recently, CPU8 was updated on October 24, 2026 and Barber Exam Center Rocket Prep on October 12, 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.*