A useful application is one that helps you do something that is useful for your work or your personal development.
Examples of useful applications:
1. AliExpress
AliExpress is a popular e-commerce site owned by the Alibaba Group. A few years ago, they converted in mobile site to a Progressive Web App.
2. Flipkart
Flipkart is India’s largest e-commerce site. They recently updated their mobile site to a Progressive Web App called Flipkart Lite.
3. Twitter Lite
In 2017, Twitter rolled out its Progressive Web App “Twitter Lite” as the default mobile web experience for all users worldwide.
4. BookMyShow
BookMyShow is the largest ticketing company in India
Cristina e Irene 