Pic Square is an iPhone app developed by MULIAN LI that allows users to post full-size photos on Instagram without having to crop them. With this app, you no longer have to worry about losing any important parts of your photos.

One of the unique features of Pic Square is its ability to stretch the edge pixels of the photo to fill in the blanks. This ensures that the entire photo is displayed on Instagram without any cropping. Additionally, the app offers a variety of backgrounds to choose from, including blur, mosaic, color, and pattern options.

Using Pic Square is simple and convenient. You can either take a photo directly within the app or choose photos from your albums. The app also provides high-resolution output of the saved photo, ensuring that the quality of your photos is maintained.

Overall, Pic Square is a powerful and user-friendly app that solves the problem of having to crop photos before posting on Instagram. Its unique stretching feature and range of background options make it a great tool for Instagram users who want to showcase their photos in their entirety.