
CyberChef
DevToys
CodeTray.dev
CodifyFormatter.org
DevToo.dev
Aptdot Developer Utilities
Lehuoliaoyu ToolHub
Fast, private developer tools in your browser. JSON formatter, Regex tester, Cron generator, and 17 more.

React Native
Thunkable
Android Studio
Bubble.io
AppsGeyser
BuildFire
MobiRoller
The fastest way to build an iOS and Android app 📱

Which is more popular?
Based on our record, Expo seems to be more popular. It has been mentioned 35 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | codeutil.dev | expo.io |
| Pricing | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


CodeUtil.dev is a collection of 20+ browser-based developer tools. JSON formatter & validator, regex tester, cron expression generator, Base64 encoder/decoder, JWT debugger, URL parser, hash generator, and more. Everything runs client-side — no data leaves your browser. No sign-up needed,...
No description of Expo yet.
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
Overall verdict
Why this product is good
Recommended for
{"beginners" => "New developers who are just getting started with app development will find Expo's simplicity and comprehensive documentation helpful.", "rapid_prototyping" => "Teams seeking to quickly prototype and iterate on ideas can benefit from Expo's convenient tools and cross-platform capabilities.", "react_native_developers" => "Developers familiar with React Native who want a streamlined solution to deploy apps without deep diving into native code."}
Walkthroughs and reviews on video.
No CodeUtil.dev videos yet. You could help us improve this page by suggesting one.
Scenes from the 2019 National FFA Convention & Expo | Review Video
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CodeUtil.dev and Expo.
CodeUtil.dev's answer
CodeUtil.dev runs entirely in the browser — all processing happens on your device, so your data never touches a server. It bundles 20+ tools (JSON, regex, Base64, JWT, cron, hashing, and more) under one roof with zero sign-up. Just open the page and start working.
Share your experience with using CodeUtil.dev and Expo. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking CodeUtil.dev since Mar 2026.
We are going to review it in a series of two articles. This is the first one, where we will touch on Expo. Expo is quite popular and is even recommended in Getting Started guide for React Native. But it differs a lot. Here we will go... - Source: dev.to / over 2 years ago
This workspace is created using @nx/expo (Nx and Expo). - Source: dev.to / over 2 years ago
Just be clear this isn't an OAuth vulnerability. It's an vulnerability in expo.io. It doesn't even really have anything to do with OAuth. They've just terrible return url handling so it probably impacts a lot more than just stealing... Source: over 3 years ago
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