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Debugging and Securing Mobile Apps with Claude Code
A Practical Sequel for Vibe-Coders: Test, Fix and Verify What You Build
You have built an app with AI assistance. Now learn how to check what it actually does. Develop a repeatable method to test, fix and verify what you build.
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About
About the Book
You have built an app with AI assistance. Now learn how to check what it actually does.
In this practical sequel to Building Mobile Apps with Claude Code, Muhammad Sohaib Roomi develops a repeatable method: describe the intended behaviour, reproduce a failure, test an explanation, make a justified repair and verify the result.
Across eleven chapters, Habit Notes provides worked examples in debugging, regression testing, authentication and authorisation, input boundaries, dependency review, constrained AI features and release verification. Compare broken, incomplete and repaired states while preserving the ordinary behaviour users need. Chapter-opening illustrations, technical diagrams, a glossary and reference cards help you follow the argument.
The book is intended for readers who can run a small app, follow commands and read a modest code diff. It teaches bounded local exercises and how to interpret their evidence. Purchasers can request the companion practice files by email after manual purchase verification; the book explains the process. Original teaching code may be used in your own apps, including commercial apps, under the companion terms. The book and teaching collection remain reserved.
Author
About the Author
Muhammad Sohaib Roomi
Muhammad Sohaib Roomi is the author of Building Mobile Apps with Claude Code. He holds a Bachelor’s degree in Telecommunications from Lancaster University and a Master’s degree in Cyber Security from the University of Hertfordshire. He has built BrightCert and Cognumi. His writing helps app builders understand what their code does, test the behaviour that matters and evaluate repairs through evidence. This sequel develops those ideas through practical debugging, testing and security exercises.
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