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

10015.io
Bitty Coder
CodeSwissKnife
ToolKitKE
devtoolz.dev
Code Beautify JSON Validator
FreeFormatter
Free online tools: JSON formatter, password generator, QR code maker, calculators, converters and more. Fast, private, no login — everything runs in your browser.

Which is more popular?
Based on our record, Luna Display seems to be more popular. It has been mentioned 69 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | astropad.com | codekithub.com |
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| Platforms | — | |
| Listed in |
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
No analysis of CodeKitHub yet.
Walkthroughs and reviews on video.
Review: Luna Display by Astropad
More videos
No CodeKitHub videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Luna Display and CodeKitHub.
CodeKitHub's answer:
CodeKitHub's answer:
Compared to single-purpose sites like JSONFormatter.org or CodeBeautify that only handle one task, CodeKitHub covers the same ground plus image, PDF, QR, and calculator tools in one place — useful if you regularly switch between different tool types during a workday.
Unlike FreeFormatter (which recently shut down its service), CodeKitHub's tools require no backend at all — everything runs as static, client-side JavaScript, so there's no server cost pressure driving ads, paywalls, or future shutdowns of the kind that killed similar sites.
If you need a tool site in a language other than English — Spanish, French, German, Japanese, Korean, Chinese, and others — CodeKitHub is one of the few free tool sites that actually localizes the full interface rather than just running it through machine translation on top of an English-only tool.
CodeKitHub's answer:
CodeKitHub serves two overlapping groups:
Traffic data shows both groups in practice: technical tools (QR generator/decoder, Base64 encoder, JSON tools) draw developer-heavy referral sources like Hacker News and ChatGPT, alongside broader organic search traffic for everyday utility tasks.
CodeKitHub's answer:
CodeKitHub started as a small set of browser-based developer utilities and grew into a 120+ tool collection covering JSON formatting, encoding, image/PDF processing, calculators and more. The core principle from the start was that every tool should run entirely client-side — no backend, no data leaving the user's browser — which keeps the tools fast, private, and cheap enough to run without ads getting in the way. The site has since expanded to 13 languages to serve users beyond English-speaking markets.
CodeKitHub's answer:
Share your experience with using Luna Display and CodeKitHub. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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.
We have no reviews of CodeKitHub yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


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
Tracking CodeKitHub since Jul 2026.
When comparing Luna Display and CodeKitHub, you can also consider the following products.

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 Luna Display or CodeKitHub:

10015.io is an all-in-one toolbox offering many tools from various categories.
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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 Luna Display or CodeKitHub:

Fast developer tools that process your input locally in your browser. No account required.
Compare Bitty Coder to Luna Display or CodeKitHub:

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 Luna Display or CodeKitHub:
Feature-packed developer toolkit. Includes text conversion, encoding, UUID generation, cryptography, color conversion, JSON/XML formatting, and more for simplified, efficient development tasks without online data transmission.
Compare CodeSwissKnife to Luna Display or CodeKitHub: