Comparison

Threejs Code Play vs LeetCode

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

Head to head
About

Threejs Code Play

Features
Read full description

3DThreejs Code Play is a powerful Three.js and WebGL learning app designed for students, beginners, web developers and programmers who want to learn 3D web development and create interactive 3D graphics using JavaScript. Learn Three.js step by step, explore practical examples, write code in the built-in editor and instantly preview your 3D output. Study scenes, cameras, objects, lighting, textures and animations while practicing real 3D web development directly on your iPhone or iPad. LEARN THREE.JS & WEBGL Understand the fundamentals of modern 3D web development through structured tutorials and practical examples. Explore topics such as: • Three.js basics • WebGL concepts • 3D scenes • Camera setup • 3D objects • Geometry • Materials • Lighting systems • Textures • Animation • Interactive 3D graphics • HTML, CSS & JavaScript integration Each learning topic includes explanations and example code to help you understand how 3D graphics work in web applications. BUILT-IN THREE.JS CODE EDITOR Write and edit Three.js, JavaScript, HTML and CSS code directly inside the app. Experiment with existing examples, modify properties, create your own 3D scenes and test new ideas without needing a desktop coding environment. REAL-TIME 3D PREVIEW Write code and instantly see your Three.js output. Real-time preview helps you understand how changes to objects, cameras, lights, materials, textures and animations affect your 3D scene. This hands-on approach makes learning Three.js easier and more interactive. PRACTICAL EXAMPLES & SAMPLE PROJECTS Explore practical Three.js examples and sample projects to understand common 3D development techniques. Study the code, modify values and immediately see the result. This makes it easier to learn through experimentation instead of only reading theory. CREATE NEW FILES Start a fresh coding workspace whenever you want to build a new example, test an idea or create another Three.js project. OPEN EXISTING FILES Open supported files from your device and continue editing previous projects without rewriting your code. SAVE YOUR CODE Save your current work locally and continue your Three.js development later. SAVE AS Create another copy of your project with a different file name or location. This is useful for testing new ideas while keeping the original version unchanged. FIND IN CODE Quickly search for specific text, variables, functions or code inside your project instead of manually scrolling through large files. GO TO LINE Jump directly to a specific line number for faster navigation and editing. UNDO & REDO Reverse unwanted changes with Undo and restore them with Redo for a smoother coding experience. RESET EDITOR Clear your current workspace and start again whenever you want to create a fresh project. LEARN WITH HTML, CSS & JAVASCRIPT Practice combining Three.js with HTML, CSS and JavaScript to understand how interactive 3D web experiences can be created for modern websites and web applications. OFFLINE THREE.JS LEARNING The app is designed to support offline learning and coding, allowing you to study tutorials, explore examples and practice Three.js without requiring a continuous internet connection. BEGINNER-FRIENDLY 3DThreejs Code Play is suitable for: • Three.js beginners • WebGL learners • JavaScript developers • Web development students • Frontend developers • Programming students • 3D web developers • HTML, CSS & JavaScript learners • Developers exploring browser-based 3D graphics LEARN 3D WEB DEVELOPMENT ANYWHERE Turn your iPhone or iPad into a convenient Three.js learning and coding environment. Study 3D graphics concepts, explore sample projects, write JavaScript code, preview your scenes and improve your understanding of Three.js and WebGL through practical learning. Learn Three.js. Create 3D graphics. Write code. Preview instantly. Download 3DThreejs Code Play and start learning interactive 3D web development today.

About

LeetCode

Practice coding challenges and prepare for technical interviews on the go. Discover company-specific questions, manage your practice lists, and track your progress. Stay updated with contests and daily quests to improve your skills.

Highlights
  • Search and discover company questions
  • Practice coding challenges
  • Manage practice lists
  • Track personal progress
  • Contest registration and calendar sync
  • Daily challenges and quests
Features
Read full description

One LeetCode a day keeps your reasoning in play. Introducing LeetCode for iOS and iPadOS. Enjoy LeetCoding right at your fingertips — jump in for quick practice, browse your collections, and stay on top of important events and progress. With LeetCode in the palm of your hand, you can easily: • Search and discover the latest company questions. • View and quickly practice your favorite challenges right in the palm of your hand. • Manage your lists or add to your wishlist to practice later. • Keep track of your personal progress with a rich profile view and widgets. • Stay notified and keep your streak alive — level up with new challenges and quests every day. • Register for contests and sync them to your calendar. Live Activities keep you updated on contest progress — so you never miss a moment. • And more content and features coming every month… Terms of Services: https://leetcode.com/terms/ Privacy Policy: https://leetcode.com/privacy/

Screenshots

Threejs Code Play4 screens
LeetCode4 screens

Verdict

The call

The clearest difference is in-app purchases: Threejs Code Play at none against LeetCode's 2. LeetCode's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 35 months). On price, 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

Both are free to download. LeetCode sells 2 in-app purchases, starting at $35.00 per month. Threejs Code Play asks for nothing beyond the download.

UpkeepUpdate frequency

Threejs Code Play ships an update every 35 months, LeetCode every 2 weeks. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
Threejs Code Play versus LeetCode: the parameters behind the verdict, then further details
ParameterThreejs Code PlayLeetCode
PriceFreeFree
Rating—4.8 (611 ratings) — better
Positive reviews—44.2% of reviews
Number of ratings—611 — better
Update frequencyEvery 35 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Ad-supported
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size13 MB110 MB
Age rating4+4+
DeveloperMerbin JoeLeetCode

In-app purchases

None

Threejs Code Play

No in-app purchases

2 purchases

LeetCode

Subscriptions2
  • LeetCode Premium Monthly$35.001 Month
  • LeetCode Premium Yearly$159.001 Year

Questions

Is Threejs Code Play free?
Threejs Code Play is free to download, with no in-app purchases.
Is LeetCode free?
LeetCode is free to download, with in-app purchases available.
Do Threejs Code Play or LeetCode have ads?
Threejs Code Play shows ads; LeetCode does not.
Which is updated more often, Threejs Code Play or LeetCode?
Threejs Code Play ships an update every 35 months, and LeetCode every 2 weeks. Most recently, Threejs Code Play was updated on September 29, 2026 and LeetCode on October 6, 2026.

Other comparisons