# CPU8 Plus vs Biology Exam

The clearest difference is iOS requirement: CPU8 Plus at 12.4 against Biology Exam's 16.4. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CPU8 Plus ships an update every 3 months, Biology Exam every 2 months. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CPU8 Plus | Biology Exam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/cpu8-plus/id1518324298/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 160 MB | 6 MB |
| Requires iOS | **12.4** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cordova Bay Entertainment Group, Inc](https://appshunter.io/developer/1448776027) | [Martin Tseng](https://appshunter.io/developer/1217065716) |

## What reviewers say

### CPU8 Plus

[App page](https://appshunter.io/ios/app/cpu8-plus/id1518324298)

This app simulates an 8-bit computer, teaching users about internal computer workings. It features an expanded memory space compared to its predecessor, allowing for more complex programs and a deeper understanding of computer architecture.

**Highlights:** Simulates 8-bit computer architecture, Expanded addressable memory (256 bytes), Simple 16-instruction set, Source code compatibility with CPU8, Hexadecimal progress displays, Detailed memory display

**In-app purchases:** none


### Biology Exam

[App page](https://appshunter.io/ios/app/biology-exam/id6468976354)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CPU8 Plus free?

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

### Is Biology Exam free?

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

### Do CPU8 Plus or Biology Exam have ads?

Neither CPU8 Plus nor Biology Exam shows ads.

### Which is updated more often, CPU8 Plus or Biology Exam?

CPU8 Plus ships an update every 3 months, and Biology Exam every 2 months. Most recently, CPU8 Plus was updated on October 10, 2026 and Biology Exam on October 25, 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.*