An android app made using a webview and a HTML5 app made with Brython
This is just a proof-of-concept.
It is an android app made in HTML5 using Python (Brython) instead of javascript as the scripting language. It runs as a standalone app so no internet connection is required. It uses the browser (Webview) localstorage to store the info.
If you want to install it just download the SimpleAgenda.apk file to your mobile and install it.
[DISCLAIMER]: I have no idea of android development so the specific files (Java and xml files) related to the android app itself could be wrong. The HTML5 app is in here.