What I do
As a developer, I develop some program/software from scratch..
Mobile App
Android mobile application that allows functionalities for the users such as sign in and sign up. The user information mostly stored in the database which usually done by using Firebase in this case. The application and database must be connected through the Internet since Firebase is a cloud storage.
Web App
Web application is different from a website since web application focuses more on what user can do. A website that allows a special functionality for a registered user is usually known as Web App. Most of the time, user can register an account, sign in and do some other functionalities such as viewing particular information that are hidden from regular visitor.
Single Page Website
Single page website with landing button functionalities. For example, this web page is a single page website.