
Codecademy
Exercism
Treehouse
edX
LeetCode
Coursera
Pantheon
Achieve code mastery through challenge.

Duet Display
Air Display
iDisplay
DisplayPad
Mountie
spacedesk
ScreenFocus
Hardware that turns the iPad into a wireless second display

Which is more popular?
Based on our record, Codewars should be more popular than Luna Display. It has been mentioned 160 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codewars.com | astropad.com |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Codewars is recommended for beginner to advanced programmers who enjoy learning through practice and are interested in improving their algorithmic thinking and coding skills in a gamified environment. It is particularly beneficial for those preparing for coding interviews or seeking to reinforce their programming knowledge in a fun and interactive way.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Codewars and Luna Display. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Edabit offers a learning experience similar to learning a new language, focusing on smaller and more frequent exercises that build proficiency over time. Like Codewars, Edabit provides many challenges that increase in...
In conclusion, while Leetcode remains a valuable resource for coders, the platforms listed above offer varied approaches to learning and improving coding skills. Whether you're drawn to the gamified learning...
This LeetCode alternative has excellent features for anyone looking to sharpen their coding skills. Codewars uses kata, which are small coding exercises that are community developed to help you master your language of...
Luna Display is another practical and premium Duet Display alternative. Putting aside the fact that Luna Display only supports Apple devices, there is nothing better than it.
Luna Display provides its services in three modes. These modes include Mac-to-iPad, Mac-to-Mac, and headless mode. It has a user-friendly interface and can be easily used by new users.
For Mac-to- Mac connection and connecting three at a time, Luna Display does the work correctly. It can turn any device to wireless screen display like iPad and Mac with no time.
Recommendations tracked on public social media and blogs since March 2021.


Recently, I was working on a coding kata on codewars.com. Early on, I started thinking that a potential solution might utilize recursion, a concept that involves a function calling itself. However, I quickly realized that my grasp of... - Source: dev.to / almost 3 years ago
Get more involved. Look into internships and junior SWE positions to get a sample of what you'd be applying for once you graduate. Solve coding challenges, start working on a portfolio of your personal works. I recommend codewars.com for... Source: almost 3 years ago
I'd recommend to play around with some basic coding challenges on leetcode.com or codewars.com. If the course prepared you well you won't find this useful, but playing around with them will make sure that you are comfortable with basics... Source: about 3 years ago
App: https://astropad.com/product/studio/ Dongle: https://astropad.com/product/lunadisplay/ First turns iPad into Wacom, second is a second screen with features Sidecar doesn't offer, such as reversing for use with teleprompter. - Source: Hacker News / over 2 years ago
Luna Display [1] works with iPads running at minimum iOS 12.1. Which means iPad mini 2, iPad Air, iPad Pro 1, iPad 5 and greater. [1] https://astropad.com/product/lunadisplay. - Source: Hacker News / about 3 years ago
You could use Luna Display, I’ve used it and it was pretty good. I think it’s a great substitute when your iMac doesn’t support the required MacOS for extending the screen natively. Source: about 3 years ago
When comparing Codewars and Luna Display, you can also consider the following products.

Learn the technical skills you need for the job you want. As leaders in online education and learning to code, we’ve taught over 45 million people using a tested curriculum and an interactive learning environment.
Compare Codecademy to Codewars or Luna Display:

With Duet Display, you can transform your iPhone or iPad into a second display to expand the screen space of your PC or Mac system.
Compare Duet Display to Codewars or Luna Display:

Download and solve practice problems in over 30 different languages.
Compare Exercism to Codewars or Luna Display:

Air Display allows extra screens to extend the display size of a Mac desktop. The company behind the product is Avatron Software, which was founded in 2008. Read more about Air Display.
Compare Air Display to Codewars or Luna Display:

Treehouse is an award-winning online platform that teaches people how to code.
Compare Treehouse to Codewars or Luna Display:

iDisplay is an app that turns a mobile device into a secondary desktop monitor. The app currently supports iOS, Android, Windows and MacOS, and it lets users connect a desktop computer to a mobile device over WiFi. Read more about iDisplay.
Compare iDisplay to Codewars or Luna Display: