This app allows users to create Android apps without programming - only editing Google Sheets (https://www.google.ca/sheets). Great way to learn HTML, CSS, Spreadsheets and Google Scripts. Get a Quick Start here:

https://sites.google.com/site/universalappstoreclassic/quick-start

It can keep a list of Google Sheets and switch between them, in effect switching to a different app. Some examples of applications which can be created are:

- Company Web Sites
- Stock Portfolio
- Various RSS Feeds
- Audio streaming

Here is full documentation on how to create your own app:
https://sites.google.com/site/universalappstoreclassic/documentation

There is also an App Store where you can get Sheet Apps and also add your own.
https://sites.google.com/site/universalappstoreclassic/home

This is also an open source project. Fork us on GitHub:
https://github.com/izivkov/UniversalApp