There are many apps that pay you for doing certain tasks.Most of the apps found in market give cash for installing other app.
This app hovewer takes a different approach.
They pay you for writing reviews for other products.
It not only lets you earn money by writing but also lets you see trusted reviews of other people.It helps alot when you want to buy any product( like Computers, Mobile devices, Laptops, Household items, kitchen appliances, etc) or use certain services( like dealers, travelling, etc) or even download apps and softwares.
All the reviews go through a filtering process and it is garunteed that only trusted and authentic reviews are visible.
It is basically a web app but also downloadable an an app.
I strongly recommend it app for its usability and helpfulness and also to earn a little extra cash.