DroidVim is a Vim clone text editor ported for Android.
Vim 8.0 (huge version multi language) grep diff and ctags are ready to use.

â–¼ Required - ARM (Android 4.1 and up) x86 (Android 4.3 and up)
Features:

â–¼ External storage support - External SD card USB memory GoogleDrive Dropbox etc. (Requires Android 4.4 and up)
â–¼ Special Keys - Esc Ctrl Tab Arrow keys and more.
â–¼ Direct input - Disabling predictive text and/or auto correction for normal mode.
â–¼ Clipboard - Clipboard commands ("*p "*y) are supported.
â–¼ Custom Font - Use your favorite monospaced font.
â–¼ Touch to move - Touch swipe flick to move cursor.
â–¼ Multi language - Vim with multi byte option iconv and multi language messages.

Extra features (in-app purchase):
â–¼Git - Version Control System.
â–¼curl - A Tool to upload/download files.
â–¼Busybox - A collection of UNIX utilities that do not exist on Android.

Tips:
â–¼ Tutorial - Type ":Vimtutor".
â–¼ You can change the keyboard input mode from Vim script.
It is possible to disable word suggestions in normal mode and enable word suggestions in insert mode.
- https://droidterm-e8a40.firebaseapp.com/droidvim/index.html#imctrl

Troubleshooting:
- If Vim freezes tap "close window" on the menu.
- If you got keyboard input issue change "Input method" preference to "Character-based" or use another keyboard.

Appendix:
DroidVim is an open source project.