Not Emacsのご紹介

Not Emacs is a text editor for programmers that supports many of the
most common emacs keybindings. This app is based on the ymacs editor
and the Gambit Scheme programming system.

Requires iOS 6.1 or later. Compatible with iPhone, iPad, and iPod
touch. This app is optimized for iPhone 5.

https://itunes.apple.com/us/app/not-emacs/id948330589?mt=8