Comparison

iTer vs CodeViewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

CodeViewer

Read full description

支持主流编程语言代码高亮

Screenshots

iTer4 screens
CodeViewer4 screens

Verdict

The call

The clearest difference is in-app purchases: CodeViewer at none against iTer's 1. CodeViewer also leads on chart position (#33 vs unranked). iTer's advantage is update cadence (every 4 days vs every 8 months). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

iTer costs $0.99 and CodeViewer $0.29 up front. iTer sells 1 one-off in-app purchase. CodeViewer asks for nothing beyond the download.

UpkeepUpdate frequency

iTer ships an update every 4 days, CodeViewer every 8 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 8 level
iTer versus CodeViewer: the parameters behind the verdict, then further details
ParameteriTerCodeViewer
Price$0.99$0.29 — better
Rating5.0 (1 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 days — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaid—
Best chart rank—#33 — better
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS16.0 — better17.2
Further details — not scored
Size19 MB1 MB
Age rating4+4+
Developer天从 何健 王

In-app purchases

1 purchases

iTer

One-time1
  • Tip the developer$0.99
None

CodeViewer

No in-app purchases

Questions

Is iTer free?
iTer costs $0.99, and also offers in-app purchases.
Is CodeViewer free?
CodeViewer costs $0.29, with no in-app purchases.
Do iTer or CodeViewer have ads?
Neither iTer nor CodeViewer shows ads.
Which is updated more often, iTer or CodeViewer?
iTer ships an update every 4 days, and CodeViewer every 8 months. Most recently, iTer was updated on October 7, 2026 and CodeViewer on October 8, 2026.

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