Comparison

iCoder vs IELTS Vocab Builder

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

Head to head
About

iCoder

This app offers a comprehensive learning resource for algorithms and data structures, featuring a large question bank and interview preparation materials. It provides a powerful search engine and allows users to share progress with friends, making complex topics accessible for IT professionals.

Highlights
  • 1000+ algorithm question bank
  • IT company interview preparation
  • Powerful search engine
  • Shareable learning progress
  • Cross-platform support (iOS, iPadOS, macOS)
  • Keyboard shortcuts for navigation
Features
Read full description

Eight years. One mission: help you master algorithms without distractions. iCoder is a LeetCode practice app trusted since day one by learners preparing for technical interviews. Version 8.0 marks our 8th anniversary with a complete SwiftUI rebuild: faster, cleaner, and ready for iOS 16 and later. Still 1000+ classic problems, still offline, still no ad popups. WHY iCODER - Born for interview prep: company-tagged problems mirror what top firms often ask - Organized by difficulty, tags, and companies so you can drill weak spots - Offline-first: the library lives on your device; browse, quiz, and widgets work without Wi-Fi - Eight years of polish: now with a modern SwiftUI interface and rich widgets BROWSE AND SEARCH - Numbered list or compact grid with adjustable columns on iPhone and iPad - Filter by Easy, Medium, Hard, VIP, favorites, and learning status - Optional Favorites and Recently Viewed at the top of the Problems tab - Search by problem ID, title, content, tag, or company - Swipe and context menus for favorites and status CATEGORIES - Algorithm tags from arrays to dynamic programming - Company collections for targeted interview practice - Smooth flow from filters to detail PROBLEM DETAIL - Bilingual Chinese and English descriptions - Adjustable font size - Unlearned, Learned, and Mastered tracking - Toolbar favorites and solution links when online - Share a long image for notes or study groups - Previous and next problem navigation DAILY QUIZ AND REVIEW - Ten questions per day by difficulty, tag, or company - Today score, best score, and streak - Wrong Book with one-tap return to full problem detail - Reshuffle for extra practice the same day LEARNING TRACKING - Favorites and Recently Viewed lists in Settings - One-tap clear all recents - Stats for favorites, learned rate, and mastered rate WIDGETS (iOS 16 AND LATER) - Daily Problem, Difficulty Glance, Daily Quiz, Favorites, Wrong Book, Learning Progress, Company Spotlight - Lock Screen and StandBy compact layouts; deep-link into the app - On iOS 17 and later: shuffle from Daily Problem and Company Spotlight Home Screen widgets without opening the app - In-app Widget Guide with FAQ PERSONALIZATION - Sixteen accent colors; Light, Dark, or System - Widget backgrounds can match your theme - English, Simplified Chinese, Traditional Chinese, or Follow System - List or grid layout with custom column count SHORTCUTS - Up to four Home Screen quick actions on long-press - Deep links from widgets and shortcuts - iPad and Mac keyboard shortcuts SUPPORT - Rate, email feedback, share the app, tip the developer - More apps from the developer - Optional App Store update reminder OUR PROMISE SINCE YEAR ONE - No ad popups inside the app - Offline problem library - Your time is precious; we respect it Requires iOS 16.0 or later. Download iCoder 8.0 and celebrate eight years of practice with us.

About

IELTS Vocab Builder

Features
Read full description

Master IELTS Vocabulary for Band 6-9 SuccessAchieve your IELTS goals with focused practice on vocabulary and paraphrasing. Perfect for Academic and General Training candidates, our app delivers rapid progress through interactive drills. Why Choose Us? - Build Core Vocabulary: Match definitions, learn collocations, synonyms, antonyms, and word forms with ~3000 words + ~2500 side words (total ~5500). - Paraphrase Mastery: Practice rephrasing for Writing Task 2 excellence. - Flashcards & Glossary: Quick reviews with examples for on-the-go study. - Track Your Progress: Levels, quizzes, and stats to measure improvement. Join thousands mastering IELTS skills daily. Privacy-focused. Download now and level up your English! Legal and Privacy: By using our app, you agree to our Privacy Policy and Apple’s standard Terms of Use. Privacy Policy: https://cleevao.github.io/ielts_vocabulary_support/privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

iCoder4 screens
IELTS Vocab Builder4 screens

Verdict

The call

The clearest difference is price: IELTS Vocab Builder at Free against iCoder's $1.29. IELTS Vocab Builder also leads on iOS requirement (13.0 vs 16.0). iCoder's advantage is ads (none vs shown) and update cadence (every 6 days vs every 3 weeks). On 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

CostPrice · In-app purchases · Ads · Monetization

IELTS Vocab Builder is free to download; iCoder costs $1.29 up front. iCoder sells 1 one-off in-app purchase and IELTS Vocab Builder sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

iCoder ships an update every 6 days, IELTS Vocab Builder every 3 weeks. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

Scorecard4 real differences · 6 level
iCoder versus IELTS Vocab Builder: the parameters behind the verdict, then further details
ParameteriCoderIELTS Vocab Builder
Price$1.29Free — better
Rating3.7 (6 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 6 days — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationPaid—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.013.0 — better
Further details — not scored
Size10 MB62 MB
Age rating4+4+
Developer天从 何SAMI SANDAL

In-app purchases

1 purchases

iCoder

One-time1
  • Tip the developer$0.99
3 purchases

IELTS Vocab Builder

Subscriptions3
  • Monthly Premium$2.991 Month
  • Premium for 6 Months$12.996 Months
  • Yearly Premium$24.991 Year

Questions

Is iCoder free?
iCoder costs $1.29, and also offers in-app purchases.
Is IELTS Vocab Builder free?
IELTS Vocab Builder is free to download, with in-app purchases available.
Do iCoder or IELTS Vocab Builder have ads?
IELTS Vocab Builder shows ads; iCoder does not.
Which is updated more often, iCoder or IELTS Vocab Builder?
iCoder ships an update every 6 days, and IELTS Vocab Builder every 3 weeks. Most recently, iCoder was updated on October 25, 2026 and IELTS Vocab Builder on October 26, 2026.

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