Our favorite is DealNews.com, which has a team of deal hunters who keep their eyes on a million products at more than 2,000 reputable online retailers and update the site with new deals at least 200 times a day. Plus, it works with merchants to offer exclusive deals you won't find elsewhere. There's a picture of each product and ample information, including the original price, sale price and whether it's the lowest price DealNews has found for the product. You can sign up for e-mail alerts for products or stores you're interested in and get shopping advice from the site's buying guides.
I do not like the security of this apps. By default any one in my home can just open it up and start buying things on my account. I would like it to just add things to my cart on the TV and them buy on "My" Computer or "My" phone. I know you can setup a PIN for "videos, purchasing and certain types of content".But, you then need to enter the PIN for $0 videos. Also, anybody with access to the Fire TV remote can just install the apps and start buying things, no pin, no password, just because you have a Fire TV setup on your account. Amazon you need to have a separate PIN for Buying videos, parental control (ratings), Apps and Shopping. And by default the app should setup a PIN.