# KernelPath vs Opcodes

The clearest difference is in-app purchases: KernelPath at none against Opcodes's 1. On price, ads, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | KernelPath | Opcodes |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 8 days |
| Monetization | — | Free |
| Size | 6 MB | 58 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Davide Fiorino](https://appshunter.io/developer/1082765618) | [John Kennedy](https://appshunter.io/developer/284943103) |

## What reviewers say

### KernelPath

[App page](https://appshunter.io/ios/app/kernelpath-learn-os-kernels/id6759215814)

**Features:** macOS Compatibility

**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 KernelPath free?

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

### Is Opcodes free?

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

### Do KernelPath or Opcodes have ads?

Neither KernelPath nor Opcodes shows ads.

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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.*