Allow to install font (TI-Nspire CX Font on Android)

[hakodate76]

without Root, it's somewhat difficult to use app with custom truetype font on Android and iPhone. Would you add function to use font from local folder or install to folder for app?

arrow ▶ , Enter Key currently invisible on the image, substituted with ❎

[Vogtinator]

Could be done, but usually that can be substituted with an image (ideally SVG).

Is it really difficult to use because of the missing symbols?

There aren't any arrows missing BTW, the touchpad is actually supposed to be blank.

[hakodate76]

it's quite generous app. quite grateful .. :) Thank you for making this software.