If you have an ecommerce site and you don’t have a mobile shopping app, you are missing out on a huge chunk of potential sales. Shopping apps are the fastest-growing thing in mobile, with shopping sessions on mobile apps up 77% from 2014, according to a recent article from Forbes.

We’ve gathered some examples of mobile shopping apps that do it right in terms of easy navigation, smart design and social interaction.

TopHatter

TopHatter is a live auction shopping app. Users can bid or post items for sale ranging from jewelry to technology. The site’s design is fun, intuitive and picture-heavy.

Modcloth

ModCloth’s mobile shopping app is just as quirky and fun as its online shopping site. Users can quickly scroll through new fashions or find choices unique for them through the “Fit for Me” option, which allows users to enter their measurements to find that perfect LBD.

ModCloth nails it with social interaction with its Style Gallery where users can post pics of themselves posing in their latest ModCloth fashion finds.

Polyvore

Polyvore is an app designed to be like a personal shopper. Based on your taste in fashion and design, Polyvore will recommend looks in homewares and fashion from top designers and brands with beautiful photos.

Etsy

Unlike some online retailers where the shopping app lets you down, Etsy’s mobile app is just as cool and entertaining as the online version. With intuitive design and great graphics, you’ll be able to hunt down that Serbian-made, crocheted dog carrier you’ve been looking for in just minutes.