You can draw graphs using Gnuplot with a superior user interface on Android.

Please see the movie below.
https://www.youtube.com/watch?v=kcYNh9aiuOc

This application has the following features.

- Original software keyboard.
- Command and variable name completion.
- Graphs are drawn on console.
- Command line history is available.
- Support scrolling through recent graphs.
- Full screen for graphs.
- Script file editor supporting command completion.
- Long pressing shows the menu to save graph as image and load script files.
- Favorite gallery apps for inspecting saved images.
- Script files are loaded directory from Dropbox OneDrive ES FileExplorer and so on.

Associated application MaTX Mobile is now on release at
https://play.google.com/store/apps/details?id=org.mklab.matx.android

We referred to the addiplot and provide the source code of this application in
https://github.com/mklab/gnuplot-android