Chm Reader X is a free app for reading electronic books (eBooks) that uses the CHM extension, specifically, on mobile devices such as tablets and smartphones. It is a fast, lightweight, and highly optimized app with a user-friendly interface.

CHM refers to Microsoft Compiled HTML Help, which is a Windows-specific extension for ebooks and Windows help files.

This exclusive format or extension type should finally find it's place with this handy tool. It can even read badly-formatted CHM files.

You can use the built-in bookmark function to save the pages that you like. You can also use the built-in scroll function to scroll to the page that you want to read.