# Little Man Computer vs Opcodes

The clearest difference is rating: Opcodes at 4.8 against Little Man Computer's 4.3. Opcodes also leads on update cadence (every 8 days vs every 45 months). Little Man Computer's advantage is in-app purchases (none vs 1) and iOS requirement (14.0 vs 18.0). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Opcodes sells 1 one-off in-app purchase. Little Man Computer asks for nothing beyond the download.

Opcodes holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 6 and 6 respectively.

Little Man Computer ships an update every 45 months, Opcodes every 8 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Little Man Computer | Opcodes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/little-man-computer/id1174092777/reviews) | **[4.8 (6 ratings)](https://appshunter.io/ios/app/opcodes-retro-cpu-reference/id6760205834/reviews)** |
| Number of ratings | 6 | 6 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 45 months | **Every 8 days** |
| Monetization | Free | Free |
| Size | 1 MB | 58 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SparrowTek LLC](https://appshunter.io/developer/1174092776) | [John Kennedy](https://appshunter.io/developer/284943103) |

## What reviewers say

### Little Man Computer

[App page](https://appshunter.io/ios/app/little-man-computer/id1174092777)

Explore the fundamentals of computer architecture and assembly language with this educational tool. It simulates the von Neumann architecture, offering a hands-on way to grasp how computers process information. Ideal for students and anyone curious about computing.

**Highlights:** Computer architecture simulation, Assembly language learning, Von Neumann architecture model, Educational tool, Historical computing concepts

**In-app purchases:** none


### Opcodes

[App page](https://appshunter.io/ios/app/opcodes-retro-cpu-reference/id6760205834)

This app provides a comprehensive reference for retro CPU opcodes, including detailed descriptions, assembly examples, and historical context. It covers eighteen iconic processors and offers features like search, sorting, and filtering for easy exploration of historical computing information.

**Highlights:** Opcode reference for 18 iconic processors, Detailed instruction descriptions, Hex, octal, decimal values, Flags affected, addressing modes, cycle counts, Assembly code examples, CPU history and pinout diagrams, Simple assembler/disassembler

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Me a Coffee | $0.99 | one-time |


## Frequently asked questions

### Is Little Man Computer free?

Little Man Computer is free to download, with no in-app purchases.

### Is Opcodes free?

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

### Which has better reviews, Little Man Computer or Opcodes?

Opcodes is rated higher. Little Man Computer averages 4.3 out of 5 from 6 ratings, while Opcodes averages 4.8 from 6 ratings.

### Do Little Man Computer or Opcodes have ads?

Neither Little Man Computer nor Opcodes shows ads.

### Which is updated more often, Little Man Computer or Opcodes?

Little Man Computer ships an update every 45 months, and Opcodes every 8 days. Most recently, Little Man Computer was updated on October 6, 2026 and Opcodes on October 7, 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.*