First Install the termux app from google playstore or from fdroid.Also install hackers keyboard app for better control over termux (Optional) After installing the app run the following commands below: $ termux-setup-storage [This command gives you prompt for asking permission to read and write files on your device.Make sure you allow that.] $ pkg up [this command updates repositories of termux & upgrades the installed packages.] $ pkg install emacs [This will install emacs] (Note: this is the command line version of emacs.But it supports mouse interaction and touch.) Now to run emacs just type: $ emacs [image of emacs running in termux | Android (upper) with Hacker's keyboard ( lower )]