Rubyist vs CodeMaster AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rubyist
Execute and automate Ruby scripts directly on your iPhone and iPad. This app utilizes the MRuby VM to run code, integrate with Shortcuts and Siri, and offers a robust editor with syntax highlighting and autocomplete.
- Run Ruby code on device
- Editor with syntax highlighting
- Code autocomplete
- Shortcuts app integration
- Siri command creation
- Native alerts and inputs
- HTTP requests
- Clipboard access
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Rubyist allows you to run Ruby code on your iPhone and iPad using the MRuby VM. Run code directly in the app or via the Shortcuts app or Siri commands. Features: - Run Ruby code directly on your device - Built-in documentation viewer - Editor with ruby syntax highlighting - Code Autocomplete - Run Ruby directly in Shortcuts - Build your own Siri commands in Ruby. - Display native alerts and inputs using exclusive APIs - Make http requests from your code. - Write and read your clipboard from code
CodeMaster AI
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CodeMaster AI is a gamified learning and habit-tracking app for software engineering. Mastering code should be a daily habit — not another boring tutorial to forget. CodeMaster AI helps you build consistent engineering skills with a clean, elite training app that fits into your day. Solve quick challenges in seconds, track your progress on the Skill Radar, and level up from Trainee to Code Master under AI pressure. WHY YOU’LL LOVE IT • Daily micro-reps — train with Daily Mix, protect your streak, and earn XP with fast, targeted challenges • Personalized skill tree — master Core Logic, UI, Architecture, Data, and Testing across multiple programming languages • The Arena — test your speed and endurance in Blitz mode, Neural Marathon, or face the Daily Boss • Ranks & achievements — unlock elite Vault badges and climb the global developer leaderboard • Smart reminders — optional study nudges with quiet hours you control • Share your progress — send your rank and stats to friends with one tap • Dark obsidian mode — easy on the eyes during late-night coding sessions • English & Ukrainian — use the app in your preferred language UNLOCK MORE WITH CODE MASTER PRO Take your engineering preparation to the ultimate level with our elite tier: • Unlimited AI Mentor — get unlimited personalized feedback and deep-dive code explanations • Full Skill Tree Access — unlock advanced architecture, data, and testing modules • Unlimited Neural Marathon — push your endurance without daily entry limits • Exclusive PRO Badges — earn rare titles and flex unique cyber badges • Weekend Streak Freeze — auto-freeze your streak on weekends to protect your discipline • AI Tone of Voice — customize your mentor's personality (Strict Senior or Friendly Coach) DESIGNED FOR REAL DEVELOPERS Whether you’re brushing up on fundamentals for a junior role or sharpening your architecture skills for a senior interview, CodeMaster AI keeps things lightweight and motivating. No long, boring video courses. No pressure. Just a clear daily challenge and the AI tools to conquer it. ACCOUNT & PRIVACY Sign in with email or Google to sync your data securely. You can update your tech stack, manage notification preferences, and delete your account at any time from the app. IMPORTANT CodeMaster AI is a gamified learning and habit-tracking app for software engineering. It is not an accredited university and does not guarantee job placement. Always consult official documentation and practical experience for production-level work. Download CodeMaster AI and make continuous learning a habit you’ll actually keep. Privacy Policy: https://codemaster-ai.com/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: CodeMaster AI at daily against Rubyist's every 3 weeks. CodeMaster AI also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases 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
Both are free to download. Rubyist sells 3 one-off in-app purchases and CodeMaster AI sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Rubyist ships an update every 3 weeks, CodeMaster AI daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Rubyist | CodeMaster AI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (96 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 96 — better | — |
| Update frequency | Every 3 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 102 MB |
| Age rating | 4+ | 4+ |
| Developer | TSUBASA TECHNOLOGIES LIMITED LIABILITY COMPANY | Mykola Shchypailo |
In-app purchases
Rubyist
- Small Tip$0.99
- Medium Tip$4.99
- Large Tip$9.99
CodeMaster AI
- Master Tier Monthly$3.991 Month
- Master Tier Yearly$34.991 Year









