# Learn Erlang Programming vs Opcodes

The clearest difference is price: Opcodes at Free against Learn Erlang Programming's $1.99. Opcodes also leads on update cadence (every 8 days vs every 24 months) and rating (4.8 vs 4.5). Learn Erlang Programming's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 18.0). On ads and device support there is nothing between them.

Opcodes is free to download; Learn Erlang Programming costs $1.99 up front. Opcodes sells 1 one-off in-app purchase. Learn Erlang Programming asks for nothing beyond the download.

Opcodes holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 2 and 6 respectively.

Learn Erlang Programming ships an update every 24 months, Opcodes every 8 days. The most recent releases landed on September 28, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Learn Erlang Programming | Opcodes |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/learn-erlang-programming/id1634383128/reviews) | **[4.8 (6 ratings)](https://appshunter.io/ios/app/opcodes-retro-cpu-reference/id6760205834/reviews)** |
| Number of ratings | 2 | **6** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 8 days** |
| Monetization | Paid | **Free** |
| Size | 36 MB | 58 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Muhammad Mubeen](https://appshunter.io/developer/1553722821) | [John Kennedy](https://appshunter.io/developer/284943103) |

## What reviewers say

### Learn Erlang Programming

[App page](https://appshunter.io/ios/app/learn-erlang-programming/id1634383128)

Master the Erlang programming language to build highly available, scalable soft real-time systems. This app provides a solid understanding of Erlang's core concepts, including concurrency, distribution, and fault tolerance, essential for industries like telecoms and e-commerce.

**Highlights:** Understand Erlang programming language, Build scalable soft real-time systems, Learn about high availability, Explore concurrency and distribution, Grasp fault tolerance concepts, Study functional programming principles

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

**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 Learn Erlang Programming free?

Learn Erlang Programming costs $1.99, with no in-app purchases.

### Is Opcodes free?

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

### Which has better reviews, Learn Erlang Programming or Opcodes?

Opcodes is rated higher. Learn Erlang Programming averages 4.5 out of 5 from 2 ratings, while Opcodes averages 4.8 from 6 ratings.

### Do Learn Erlang Programming or Opcodes have ads?

Neither Learn Erlang Programming nor Opcodes shows ads.

### Which is updated more often, Learn Erlang Programming or Opcodes?

Learn Erlang Programming ships an update every 24 months, and Opcodes every 8 days. Most recently, Learn Erlang Programming was updated on September 28, 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.*