iTer - IT learning

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.