This app simulates a computer's CPU, illustrating the fetch-decode-execute cycle and register changes. It includes an IDE for assembly code development and allows users to save and share simulations.






250+ iOS apps & games curated and reviewed
If you already know CPU Simulator, this is the deeper bench. 250+ cpu simulator apps and games for iPhone, all reviewed and ranked by user rating, recency, and download trend as of October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 3.6★ (5) | No | No | May 2026 | ||
| 2 | Free | 5.0★ (5) | No | No | May 2026 | ||
| 3 | Free | 5.0★ (1) | No | No | Sep 2026 | ||
| 4 | Free | 4.3★ (189) | Yes | Yes | Sep 2026 | ||
| 5 | Free | 5.0★ (3) | No | No | May 2026 | ||
| 6 | Free | 1.9★ (295) | No | Yes | Sep 2026 | ||
| 7 | Free | 3.9★ (112) | No | Yes | Jul 2026 | ||
| 8 | Free | — | No | Yes | Jul 2026 |






This app simulates a computer's CPU, illustrating the fetch-decode-execute cycle and register changes. It includes an IDE for assembly code development and allows users to save and share simulations.






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.





Simulate a complete 32-bit mobile system, including CPU units and memory. Write and debug assembly code directly on the simulated hardware to understand its inner workings.