UlmDevice (http://ulmdevice.altervista.org) is a simple and free IDE for your mobile and desktop applications. Script tries to auto-detect the programming language used, embed code editor and export it as pdf format
Main features
• No register or login required. You can work offline
• Save code in your Android storage
• Print code as pdf format
• Drag & Drop to open file (Chromebooks or for computer desktop with HTML5 modern browsers). You can use button toolbar too to open single file (for all devices)
• Undo & Redo buttons
• Bluetooth keyboard shortcuts Ctrl-Space to autocomplete the code
• Search/Replace string and jump to line (Using advanced functions with bluetooth keyboard shortcuts too)

Details about bluetooth keyboard shortcuts:

• Ctrl-F / Cmd-F (Mac): Search
• Ctrl-G / Cmd-G (Mac): Search next
• Shift-Ctrl-G / Shift-Cmd-G (Mac): Search previous
• Shift-Ctrl-F / Cmd-Option-F (Mac): Search and Replace
• Shift-Ctrl-R / Shift-Cmd-Option-F (Mac): Replace All
• ALT-G: Jump to line
• Ctrl-Z and Ctrl-Y / Cmd-Z and Cmd-Y (Mac): Undo & Redo