Planning a wedding can be a stressful experience. Your to-do list can pile up quickly, and time is usually limited. This is where your smartphone comes to the rescue. In the spirit of the summer wedding season, we’ve found the best apps to help you plan the most important parts of your big day. Appy Couple – This app allows couples to design a custom app, just for their wedding. Appy Couple lets users create groups to communicate with, such as the bridal party or the DJ and photographer. It also allows users to manage their guest list and compile a photo gallery from the big day. The Knot – The bride’s dress is one of the most important parts of a wedding. The Knot features a wide selection of wedding dresses, including pictures and links to the websites they came from. The app also includes ideas for flowers, decorations and venues. TopTablePlanner – TopTablePlanner allows you to digitally create and organize your seating chart for the wedding. You can import your guest list from an Excel document and then drag and drop guests to any table, allowing you to create the perfect seating chart. This app simplifies what is often one of the trickiest aspects of planning a wedding. MyRegistry.com – This app allows you to manage gift registries from multiple stores all in one place. Instead of searching for products online or creating a registry in multiple stores, the app’s barcode scanner allows brides and grooms to scan items from any store and load it onto the registry. The registry is automatically updated after a guest purchases something from the list. Whether you’re getting married on the beach in front of your closest family and friends, or in a church filled with hundreds of people, these apps are the best way to keep things organized and make your wedding day one to remember.