# Opcodes vs pocketFORTH

The clearest difference is in-app purchases: pocketFORTH at none against Opcodes's 1. pocketFORTH also leads on iOS requirement (15.6 vs 18.0). Opcodes's advantage is update cadence (every 8 days vs every 3 weeks). On price, ads and device support there is nothing between them.

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

Opcodes ships an update every 8 days, pocketFORTH every 3 weeks. Both last shipped on September 20, 2026.

## The numbers

| Metric | Opcodes | pocketFORTH |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/opcodes-retro-cpu-reference/id6760205834/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 58 MB | 1 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [John Kennedy](https://appshunter.io/developer/284943103) | [Leonardo Del Nonno](https://appshunter.io/developer/1813215809) |

## 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 |


### pocketFORTH

[App page](https://appshunter.io/ios/app/pocketforth/id6774230596)

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

**In-app purchases:** none


## Frequently asked questions

### Is Opcodes free?

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

### Is pocketFORTH free?

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

### Do Opcodes or pocketFORTH have ads?

Neither Opcodes nor pocketFORTH shows ads.

### Which is updated more often, Opcodes or pocketFORTH?

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