# CPU8 vs Wiki Reader

The clearest difference is in-app purchases: CPU8 at none against Wiki Reader's 3. CPU8 also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Wiki Reader sells 3 in-app purchases, starting at $5.99 per 7 days. CPU8 asks for nothing beyond the download.

CPU8 ships an update every 3 months, Wiki Reader every 6 weeks. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | CPU8 | Wiki Reader |
| --- | --- | --- |
| 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 6 weeks** |
| Monetization | Free | — |
| Size | 163 MB | 24 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Cordova Bay Entertainment Group, Inc](https://appshunter.io/developer/1448776027) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## 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


### Wiki Reader

[App page](https://appshunter.io/ios/app/wiki-reader-ai-study-and-learn/id6760022581)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly Plan | $5.99 | per 7 days |
| Premium Yearly | $29.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is CPU8 free?

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

### Is Wiki Reader free?

Wiki Reader is free to download, with in-app purchases available.

### Do CPU8 or Wiki Reader have ads?

Neither CPU8 nor Wiki Reader shows ads.

### Which is updated more often, CPU8 or Wiki Reader?

CPU8 ships an update every 3 months, and Wiki Reader every 6 weeks. Most recently, CPU8 was updated on October 24, 2026 and Wiki Reader on October 5, 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.*