iTer vs Java Compiler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iTer
This app provides an extensive offline library of over 10,000 interview questions for developers across various programming languages and career paths. It includes company-specific exams, smart learning tools, daily quizzes, and powerful search functionality to aid in interview preparation.
- 10,000+ offline interview questions
- 16 language tracks and 12 career paths
- Company exam collections
- Smart learning management (starring, mastery labels)
- Daily quiz habit builder
- Powerful global search
- Home screen widgets and quick actions
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iTer is your offline interview question library for developers. For ten years, iTer has helped programmers study smarter for job interviews. Version 10 is a full SwiftUI rebuild that brings 10,000+ curated questions, company exams, and practical study tools into one clean, fast, always-ready app. Whether you are preparing for campus recruiting, switching jobs, or refreshing fundamentals, iTer turns spare minutes into real progress. 1. Massive offline question bank - 10,000+ interview questions, fully offline - 16 language tracks: Objective-C, Swift, Java, C/C++, PHP, JavaScript, Python, SQL, C#, HTML5, Ruby, R, Linux, Big Data, Algorithms, Network Security - 12 career paths: iOS, Java, Web, PHP, Python, Game, Database, Big Data, Linux, Algorithm, and Network Engineering - 12 company exam collections from Google, Microsoft, Baidu, Tencent, Alibaba, JD, 360, NetEase, and more - Multiple-choice and Q&A formats covering language basics, frameworks, algorithms, and common interview topics 2. Smart learning management - Star important questions for quick review before interviews - Recent history picks up where you left off - Mastery labels: unlearned, learned, mastered - Wrong-answer notebook collects mistakes from daily quizzes - Learning stats summarize favorites, wrong answers, and mastery rate 3. Daily quiz habit builder - Five multiple-choice questions every day, seeded by date - Streak counter keeps you motivated - Instant scoring with encouraging feedback - Wrong-answer review shows your answer vs the correct one - Retry today or reshuffle for extra practice 4. Powerful global search - Search questions, answers, and knowledge keywords - Filter by language or company exams - Jump straight to question details from results -【iPad + keyboard】⌘F to search, ⌘1–⌘4 for tabs. In question detail (from a multi-question list): ← Previous, R Random, Space Show answer, → Next — faster review on iPad. 5. Categories and advanced learning - Browse by career path or company exam papers - Advanced learning links to LeetCode, Objc.io, NSHipster, Awesome lists, Gitbook tutorials, and practice projects - External links open inside the app with in-app Safari 6. Home screen widgets - Daily Question: one interview question on your home screen - Quiz Glance: today score and streak - Favorites Glance: track saved questions - Wrong Book Glance: reminders for mistakes to review - Widget background can follow your app theme 7. Home screen quick actions - Long-press the app icon to pin up to 4 shortcuts - Jump to search, daily quiz, favorites, wrong book, categories, feedback, or App Store review - Deep links open the right screen instantly 8. Rich question detail experience - Tap to reveal or hide answers for Q&A items - Interactive multiple-choice practice before seeing explanations - Toolbar actions for favorite, mastery, and share - Copy question and answer text for notes - Shuffle question order in lists - Share cards render a long image with QR code for friends and teammates 9. 15 beautiful themes - Presets including Gold, Ocean Blue, Forest Green, Rose Pink, and more - Custom accent color support - Light, dark, and system appearance - List and grid layouts across language, category, and question screens 10. Native multi-platform experience - iOS and iPadOS 16: full features including widgets and quick actions - macOS 13: native Mac app with tabs, keyboard shortcuts, share cards, and tips 11. Settings and support - Toggle favorites and recent sections on the Languages tab - In-app feedback email to the developer - Tip the developer to support ongoing updates - About page with version info and open-source credits Why iTer - Ten years focused on developer interviews - Offline-first study, anywhere anytime - Questions, quizzes, wrong book, and widgets in one learning loop - One purchase, works on iPhone, iPad, and Mac Add iTer to your home screen or Dock. Five questions a day adds up to interview confidence.
Java Compiler
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Designed specifically for students and developers learning Java programming, this mobile compilation tool combines powerful Java code compilation with an intelligent AI study assistant, allowing you to write, compile, and run Java code anytime, anywhere. Core Features Code Compilation & Execution Built-in complete Java compilation environment, supporting direct compilation and execution of Java code on iPhone and iPad. Supports multiple LTS versions including Java 8, Java 11, and Java 17, along with subsequent mainstream versions. Real-time display of compilation output and runtime results, with clear error localization. Supports standard input and command-line arguments to meet the runtime needs of different programs. AI Smart Study Assistant Built-in AI programming assistant to answer Java syntax questions and explain object-oriented concepts. Helps understand complex collection frameworks, multithreading, and exception handling mechanisms. Provides code optimization suggestions, design pattern guidance, and common error analysis. Code explanation feature to quickly understand other people's code logic. Code Editing Experience Syntax highlighting for clear and readable code structure. Intelligent code completion to boost writing efficiency. Multi-file management to simulate real project structures. Built-in common Java code templates for quick onboarding and development. Learning Resources Rich Java programming tutorials and classic case studies. Sample code for common collection classes, multithreading, and network programming. Java interview question bank to assist with job hunting preparation. Code bookmarking and note-taking features to build a personal knowledge base. Target Audience College computer science students learning Java programming courses. Programming beginners mastering Java syntax from scratch. Developers preparing for Java certification exams. Developers looking to quickly verify code snippets and debug logic. Easy to Use Start using immediately without registration. Supports code saving, importing, and exporting. Supports AirDrop and iCloud synchronization for seamless switching across multiple devices. Java is one of the most widely used programming languages. Whether you are preparing for final exams or practicing algorithms, this app will become your pocket programming assistant. Download the Java Compiler & AI Study Tool to start your journey to advanced Java programming! Subscription Statement & Privacy Policy Flexible and diverse subscription plans to meet your every need! We offer multiple subscription periods, allowing you to freely choose the plan that suits you best: 1 Month: Ideal for project-based users 1 Year: Enjoy a lower unit price, long-term peace of mind Lifetime Membership: One-time purchase, permanently enjoy all features Auto-Renewal Terms: Upon purchase confirmation, the fee will be charged directly to your iTunes account. Subscription billing periods offer flexible options including monthly and annual billing. To ensure uninterrupted service, subscriptions will automatically renew within 24 hours before the current period ends (excluding lifetime memberships). Renewal fees will be charged from your account within 24 hours prior to the end of the current period, with the amount depending on your chosen plan. You can manage your subscription or turn off auto-renewal at any time in your Apple ID Account Settings. Lifetime Membership Privileges: One-time purchase, permanently unlock all features without renewal or worries! Tip: Subscription Management Path: Settings > [Your Name] > Subscriptions [Related Agreements] Privacy Policy: https://docs.qq.com/doc/DRFZnV2JkVGVSUWVU User Agreement: https://docs.qq.com/doc/DREdRb0VqQUFETVhq Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ For any questions, feel free to contact us at: hxx_shdt@126.com
Screenshots
Verdict
The clearest difference is update cadence: iTer at every 4 days against Java Compiler's every 3 months. 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
iTer costs $0.99 and Java Compiler $0.99 up front. iTer sells 1 one-off in-app purchase and Java Compiler sells 3 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.
iTer ships an update every 4 days, Java Compiler every 3 months. The most recent releases landed on October 7, 2026 and September 25, 2026 respectively.
| Parameter | iTer | Java Compiler |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 19 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | 天从 何 | 乐祥 胡 |
In-app purchases
iTer
- Tip the developer$0.99
Java Compiler
- 30天会员$14.991 Month
- 360天会员$59.991 Year
- 终身会员$79.99









