Looking for free debugging apps? 20 of our 206+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
Practice debugging skills in a fun arcade platformer. Solve real AP Computer Science exam questions to fix glitches and escape a corrupted machine. Features multiple difficulty levels and offline play.
This app allows you to quickly view the data encoded in various scannable codes without being redirected. It captures and displays the scanned image along with the encoded data, offering options to copy or share both.
This app provides a comprehensive suite of tools for web developers to inspect and debug web pages within a WebView environment. It offers features like source code inspection, network diagnostics, and JavaScript injection to streamline the development process.
Debugging: Inside the Machine tops our debugging apps ranking as of July 2026, with a 5.0-star average from 4 App Store ratings, and it's free to download.
Are there free debugging apps for iPhone?
Yes — 20 of the top debugging apps we rank are free to download, including Debugging: Inside the Machine and QR Debug.
Does Debugging: Inside the Machine have ads or in-app purchases?
Debugging: Inside the Machine has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
How many debugging apps are on the App Store?
We track 206+ debugging apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
What is Debugging: Inside the Machine?
Debugging: Inside the Machine is a free arcade platformer designed to help students practice debugging skills for AP Computer Science Principles and AP Computer Science A exams. It features in-game challenges that simulate real exam questions.
What AP Computer Science topics does Debugging: Inside the Machine cover?
The app covers CSP topics like Selection, Iteration, Functions & Lists, and CSA topics including Variables, Strings, Iteration, Loops, Arrays, and Recursion. Each difficulty level focuses on specific question banks related to these topics.