The Big Day is an app designed to help DIY brides plan their wedding. With this app, you can create and personalize multiple event countdowns with your own photo, manage your to-do lists, track your wedding guests, schedule your wedding day, keep track of your wedding expenses, and invite your partner. The app has a simple and clear interface and is guaranteed to have no ads.

To get started, simply enter your planned wedding date and your name to start your personal wedding countdown. You can choose colors, fonts, and background images to make the countdown your own. The app also lets you share a beautiful snapshot of your countdown with your friends and family.

The app has a check list to track your to-dos, with built-in categories like budget, venue, styling, or decoration. You can complete pre-defined tasks or create your own, and highlight all the things which are important for you. Additionally, you can move and re-order tasks to fit your needs and prioritization. The app also lets you curate your personal guest list, tag your guests by groups and tables, and keep track of the RSVP state of all your guests.

The app also has a timeline functionality to plan your wedding or other important events ahead. You can add activities and special occasions to your timeline in advance and be relaxed on your Big Day. The expenses planner lets you keep an eye on your budget. After you have entered your wedding budget, you can add and categorize your expenses. The app also lets you invite your loved ones to organize your wedding together and automatically synchronize all your data across different devices.