# Opcodes vs PC 110

The clearest difference is in-app purchases: PC 110 at none against Opcodes's 1. PC 110 also leads on update cadence (every 3 days vs every 8 days) and rating (5.0 vs 4.8). Opcodes's advantage is ratings volume (6 vs 1). On price, ads, monetization model and iOS requirement there is nothing between them.

Both are free to download. Opcodes sells 1 one-off in-app purchase. PC 110 asks for nothing beyond the download.

PC 110 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Opcodes has 6 ratings behind it against 1, so its average is the more settled of the two.

Opcodes ships an update every 8 days, PC 110 every 3 days. The most recent releases landed on September 20, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Opcodes | PC 110 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (6 ratings)](https://appshunter.io/ios/app/opcodes-retro-cpu-reference/id6760205834/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pc-110/id6801404183/reviews)** |
| Number of ratings | **6** | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 3 days** |
| Monetization | Free | Free |
| Size | 58 MB | 122 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [John Kennedy](https://appshunter.io/developer/284943103) | [Ahmad Byagowi](https://appshunter.io/developer/6783814876) |

## What reviewers say

### 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 |


### PC 110

[App page](https://appshunter.io/ios/app/pc-110/id6801404183)

Explore a virtual museum and emulator for the 1995 palm-size PC. Interact with its hardware, keyboard, and even control it from an Apple Watch. Learn about its design through schematics and historical archives.

**Highlights:** Palm-size PC emulator, Interactive hardware explorer, Apple Watch companion control, 3D mainboard reconstruction, Schematic navigation, Historical archive and timeline

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Opcodes free?

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

### Is PC 110 free?

PC 110 is free to download, with no in-app purchases.

### Which has better reviews, Opcodes or PC 110?

PC 110 is rated higher. Opcodes averages 4.8 out of 5 from 6 ratings, while PC 110 averages 5.0 from 1 ratings.

### Do Opcodes or PC 110 have ads?

Neither Opcodes nor PC 110 shows ads.

### Which is updated more often, Opcodes or PC 110?

Opcodes ships an update every 8 days, and PC 110 every 3 days. Most recently, Opcodes was updated on September 20, 2026 and PC 110 on September 17, 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.*