Error Code Notebook

Error Code Notebook is a simple offline app for saving technical errors and the solutions that helped you fix them.

Create entries with an error code, source, location, environment, cause, fix steps, reference link, tags, and extra notes. Keep active and fixed records in one organized vault, track your fix history on the timeline, and quickly copy saved solutions when the same issue appears again.

The app is useful for developers, testers, IT work, Android builds, device setup, backend errors, network issues, and any technical notes you want to keep close.

Main features:

Save error codes and repair notes
Add context, cause, fix, link, and tags
Mark entries as active, fixed, or archived
Browse your notebook vault
Track created, linked, copied, and fixed events
Copy saved fixes quickly
Works offline

Error Code Notebook helps you build your own personal knowledge base of problems and solutions.