Nuwa Basic vs Opcodes
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nuwa Basic
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Nuwa Basic is a programming environment specifically designed for children and other programming beginners. The Basic language features a simple syntax with only 17 fundamental statements. Building on the Basic language, Nuwa Basic incorporates sound, graphics, and animation extensions, making the process of learning programming more engaging and enjoyable. Main features of Nuwa Basic: (1) Easy to understand and easy to learn. There are only 17 basic statements; (2) Conversational programming, execute immediately after entering the command statement, quick feedback reduces the difficulty of programming introduction, and it is easier to stimulate the interest of beginners; (3) Built-in multiple graphics and animations, which can be played and controlled with simple statements to achieve interesting animation effects; (4) It has strong sound processing ability, can play songs with a variety of tones and beats, and can also play interesting built-in sound effects; (5) Support local language (input, output, string functions), and you can write your own language interface program; (6) Support syntax highlighting. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Email: nwbasic@outlook.com
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
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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 in-app purchases: Nuwa Basic at none against Opcodes's 1. Nuwa Basic also leads on device support (4 vs 2) and iOS requirement (14.0 vs 18.0). On price and ads 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
Both are free to download. Opcodes sells 1 one-off in-app purchase. Nuwa Basic asks for nothing beyond the download.
| Parameter | Nuwa Basic | Opcodes |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (6 ratings) — better |
| Number of ratings | — | 6 — better |
| Update frequency | — | Every 8 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 47 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | 光建 张 | John Kennedy |
In-app purchases
Nuwa Basic
No in-app purchases
Opcodes
- Buy Me a Coffee$0.99









