LyX is not available for Android but there are a few alternatives with similar functionality. The best Android alternative is VerbTeX LaTeX Editor, which is free. If that doesn't work for you, our users have ranked more than 25 alternatives to LyX, but unfortunately only two of them are available for Android. If you can't find an alternative you can try to remove all filters.
VerbTeX is a free, collaborative LaTeX Editor. It allows you to create and manage LaTeX projects directly on your Android device and generate a PDF by using Verbosus (Online LaTeX and Octave Editor)
TeXPortal is an application to typeset TeX documents, targeting mainly at academic researchers.
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