Comparison

iCoder vs Another Turing Machine

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
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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

Another Turing Machine

Features
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Unlock the power of computation with this Turing Machine, a fully featured Turing machine simulator designed for learning, experimentation, and analysis. Key Features: - Single or Multi-Tape Support – Run programs on one or multiple tapes for complex simulations. - Flexible Alphabets – Use binary or decimal numbers or letters - Step-by-Step Execution – Watch the machine in action as it moves and modifies the tapes. - Share Your Programs – Export and share your Turing machine programs with others. - Generate PDF Reports – Save and share reports including your configuration, program logic, and execution results. Whether you're a student, researcher, or enthusiast exploring the fundamentals of computation, this Turing Machine provides an intuitive and powerful way to experiment with Turing machines. Download now and start exploring the world of theoretical computing!

Screenshots

iCoder4 screens
Another Turing Machine4 screens

Verdict

The call

The clearest difference is in-app purchases: Another Turing Machine at none against iCoder's 1. Another Turing Machine also leads on update cadence (daily vs every 6 days). iCoder's advantage is iOS requirement (16.0 vs 18.2). On price, ads 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

iCoder costs $1.29 and Another Turing Machine $1.99 up front. iCoder sells 1 one-off in-app purchase. Another Turing Machine asks for nothing beyond the download.

UpkeepUpdate frequency

iCoder ships an update every 6 days, Another Turing Machine daily. The most recent releases landed on September 24, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 7 level
iCoder versus Another Turing Machine: the parameters behind the verdict, then further details
ParameteriCoderAnother Turing Machine
Price$1.29 — better$1.99
Rating3.7 (6 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 6 daysDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaid—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS16.0 — better18.2
Further details — not scored
Size10 MB1 MB
Age rating4+4+
Developer天从 何Stefan JOSTEN

In-app purchases

1 purchases

iCoder

One-time1
  • Tip the developer$0.99
None

Another Turing Machine

No in-app purchases

Questions

Is iCoder free?
iCoder costs $1.29, and also offers in-app purchases.
Is Another Turing Machine free?
Another Turing Machine costs $1.99, with no in-app purchases.
Do iCoder or Another Turing Machine have ads?
Neither iCoder nor Another Turing Machine shows ads.
Which is updated more often, iCoder or Another Turing Machine?
iCoder ships an update every 6 days, and Another Turing Machine daily. Most recently, iCoder was updated on September 24, 2026 and Another Turing Machine on October 9, 2026.

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