Fotogramme is a free iOS app that focuses on simplicity and ease of use. You can easily switch between multiple accounts by tapping on the Account button. The app has no frills – the feed provides a grid view of your friends’ posts, which also includes video, an added plus. Tapping on a post provides easy social interaction: You can share content via tweet, you can hit like, and you can check out your friend’s post details and post a comment. Searching posts by username, location, hashtag, and popularity is also possible, as well as is checking out your photos and photos you’ve liked in separate streams. Since Fotogramme is mainly a client for viewing Instagram posts, you can’t upload and post photos – you can do that through the official Instagram app.