Learn Three.js Offline vs Opcodes
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Learn Three.js Offline
Master 3D graphics and interactive web development with comprehensive tutorials and interactive demos. Learn Three.js from scratch, access code snippets, and explore rich content to build stunning visualizations on your mobile device.
- Learn Three.js from scratch
- Interactive 3D demos
- In-depth articles and video tutorials
- Code snippets and templates
- Offline learning capabilities
Read full descriptionHide full description
Learn Three.js – Your Complete Offline Guide to Modern 3D Web Development Learn Three.js is a complete learning app designed for students, beginners, and professional web developers who want to master 3D graphics on the web. Whether you're creating interactive websites, games, animations, or immersive visualizations, this app provides structured lessons that help you learn from the fundamentals to advanced concepts. Study anytime without an internet connection. Every lesson is organized into easy-to-follow chapters with practical explanations and code examples that make learning enjoyable and effective. Why Learn Three.js? Three.js is one of the most popular JavaScript libraries for creating 3D graphics in web browsers using WebGL. It simplifies complex graphics programming and enables developers to build stunning interactive experiences with less code. This app helps you understand both the theory and practical implementation of Three.js through carefully organized tutorials. App Features Offline Learning Access all tutorials without requiring an internet connection after installation. Beginner Friendly Learn step by step with clear explanations and practical examples. Comprehensive Tutorials Study topics ranging from basic concepts to advanced Three.js development. Code Examples Understand every concept through easy-to-read sample code. Interview Questions Prepare for developer interviews with commonly asked Three.js questions. Frequently Asked Questions Who Should Use This App? Students learning web development Frontend developers JavaScript developers WebGL beginners Game developers Creative developers UI and UX engineers Technical artists Anyone interested in interactive 3D web experiences Whether you're building your first 3D scene or creating professional interactive applications, Learn Three.js provides the knowledge and practical guidance you need to become a confident Three.js developer. Download Learn Three.js today and start building beautiful, interactive 3D experiences for the modern web.
Opcodes
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.
- 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
Read full descriptionHide full description
Opcodes – The Retro CPU Reference The definitive opcode reference for the legendary processors that launched the personal computer revolution. Whether you're a retrocomputing enthusiast, a student of computer history, writing code for classic hardware, or just a big old nerd - the Opcodes app gives you everything you need. Eighteen iconic processors covered: Intel 4004 · Intel 8008 · Intel 8080 · Intel 8085 · Intel 8088 · Zilog Z80 · Motorola 6800 · Intel 8085 · Motorola 6809 · MOS 6502 · Signetics 2650 · RCA 1802 - SC/MP · Motorola 68000 · Intel 8086 · WDC 65816 · Texas Instruments TMS9900 · INMOS Transputer · ARM2 For every opcode: • Full description of what the instruction does. • Hex, octal, and decimal values. • Flags affected. • Addressing modes and cycle counts. • Assembly code examples - including loops, conditionals, and common patterns. More than just opcodes: • CPU history and historical context. • IC pinout diagrams. • Notable systems that used each CPU, with memory maps and other background information. • Chip variants and successors. • A silly card game(!) • Simple assembler / disassembler for many CPUs. Built for exploration: • Search for opcodes by name or category. • Sort by mnemonic, opcode byte, or category. • Filter by category, Quick Find with a colorful map. • Undocumented instructions clearly marked and optionally displayed. More than microprocessors: • Information on key support chips: video, sound, memory and more. Cool design: • Clean, readable layout optimised for quick reference. • Multiple colour themes. • Full "dark mode" support. Everything is included with absolutely no in-app purchase required. Recent additions: • Quiz game - test your CPU knowledge! • Share CPU cards - beautiful shareable images showing specs and history for any processor • External references - curated links to community resources for all 18 CPUs • "Opcodes display first" setting - choose whether selecting a CPU shows opcodes or info first • Chip-maker colour themes - Zilog, MOS Tech, and Motorola replace the old themes • Enhanced 6502 docs - JMP page boundary bug, BRK behaviour, and Read-Modify-Write quirks • Fixed Scratchpad hang when switching tabs
Screenshots
Verdict
The clearest difference is price: Opcodes at Free against Learn Three.js Offline's $1.99. Opcodes also leads on rating (4.8 vs 1.0) and update cadence (every 8 days vs every 35 months). Learn Three.js Offline'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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Opcodes is free to download; Learn Three.js Offline costs $1.99 up front. Opcodes sells 1 one-off in-app purchase. Learn Three.js Offline asks for nothing beyond the download.
Opcodes holds the better App Store score, 4.8 against 1.0. 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.
Learn Three.js Offline ships an update every 35 months, Opcodes every 8 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Learn Three.js Offline | Opcodes |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 1.0 (1 ratings) | 4.8 (6 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 35 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 38 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Muhammad Mubeen | John Kennedy |
Customer experience
Learn Three.js Offline
Opcodes
In-app purchases
Learn Three.js Offline
No in-app purchases
Opcodes
- Buy Me a Coffee$0.99
Questions
Is Learn Three.js Offline free?
Is Opcodes free?
Which has better reviews, Learn Three.js Offline or Opcodes?
Do Learn Three.js Offline or Opcodes have ads?
Which is updated more often, Learn Three.js Offline or Opcodes?
Other comparisons















