MasterJi vs PubDevLib
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MasterJi
Practice coding with curated problems, daily drops, and company-tagged sets. Engage in live multiplayer quizzes and community discussions. Track progress with XP, streaks, and badges. It's a free, ad-free platform for interview prep and skill development.
- In-app code editor with multi-language support
- Daily problems and company-tagged question sets
- Live multiplayer coding quizzes
- Progress tracking with XP, streaks, and badges
- Community Town Halls for real-time chat
- Proof-based submissions and challenge rankings
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MasterJi is your free coding practice coach—built for students, working developers, and community learners who want to stay consistent with interview prep. What you can do: • Solve curated problems in the in-app editor with sample tests, language templates, and detailed results • Explore daily problem drops, company-tagged sets, and public coding sheets tailored to core data structures and algorithms • Jump into coding challenges, submit proof with images, and climb challenge rankings • Earn XP, track your heatmap, maintain streaks, and collect challenge winner badges • Join live multiplayer quizzes with real-time questions, leaderboards, and timed rounds • Join Town Halls and chat in real time with your community (including GIFs, images, and @mentions) Coding Practice: → In-app code editor with multi-language support and sample test cases → Daily problems and company-tagged question sets → Public coding sheets for structured DSA practice → Challenge rankings and proof-based submissions Sign in with Apple, Google, or GitHub to sync progress across devices. MasterJi never shows ads or sells your data, and all uploads stay inside the community. Push notifications keep you informed about upcoming deadlines, quiz starts, wins, and code review reminders. Perfect for: → Students preparing for technical interviews → Developers staying sharp between jobs → Anyone building a consistent coding habit → Communities running live coding competitions Start your coding journey today—completely free.
PubDevLib
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Explore Flutter packages and libraries published on pub.dev with PubDevLib. PubDevLib helps developers discover and review Flutter packages available on pub.dev. Explore package details, understand dependencies, and review compatibility with Flutter and Dart versions through a clear and structured reference. The app provides organized information about Flutter libraries to support developers working with Flutter and Dart projects. Flutter Libraries: • Explore packages published on pub.dev • Discover commonly used Flutter libraries • Review package descriptions and details • Understand library functionality Package Information: • View package versions • Explore dependencies and dev dependencies • Review compatibility with Flutter and Dart versions • Understand package requirements Compatibility Insights: • Review Flutter SDK compatibility • Understand package version requirements • Explore compatibility between libraries Search and Discovery: • Search Flutter packages quickly • Browse libraries by category • Explore packages used in Flutter development Favorites: • Save frequently used libraries • Quickly access important packages Learning Tools: • Quiz mode to test Flutter knowledge • Educational facts about Flutter packages • Structured information for easier exploration Designed for Developers: • Clean and simple interface • Fast navigation through packages • Organized library information Premium Features: • Offline access to package information • Ad-free experience • Improved browsing convenience Privacy Focused: • No unnecessary permissions • No personal data collection • Information remains on your device Who This App Is For: • Flutter developers • Dart developers • Software engineers working with Flutter • Students learning Flutter development PubDevLib helps developers explore Flutter packages, review dependencies, and understand library compatibility. Download PubDevLib to explore packages from pub.dev. LICENSED APPLICATION END USER LICENSE AGREEMENT: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: MasterJi at none against PubDevLib's 2. MasterJi also leads on ads (none vs shown) and update cadence (weekly vs every 3 months). PubDevLib's advantage is iOS requirement (13.0 vs 15.1). On price 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. PubDevLib sells 2 in-app purchases, starting at $1.99 per month. MasterJi asks for nothing beyond the download.
MasterJi ships an update weekly, PubDevLib every 3 months. The most recent releases landed on September 28, 2026 and September 30, 2026 respectively.
| Parameter | MasterJi | PubDevLib |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 47 MB | 100 MB |
| Age rating | 12+ | 4+ |
| Developer | Hitesh Choudhary | Olga Ivanova |
In-app purchases
MasterJi
No in-app purchases
PubDevLib
- pubdev_by_oliva_subscription$1.991 Month
- pubdev_by_oliva_donation$1.99









