It's NotBad NotePad android app which supports html text formatting in .txt files

Features:

• Simple UI notepad app
• 8 Text formatting options
• 9 Foreground colors
• 9 Highlight colors

Implementation Highlights:

• Handling Android files read/write to storage
• Spanned string class effects
• Importing / Exporting spanned text
• Editing Html tags using Jsoup Library
• Solved Problem: Html.fromHtml() / Html.toHtml() can't read font size effects

Download App

APK File