.APP domains offer a restricted namespace for app developers. As a fairly new domain space, short, relevant names and keywords are more likely to be available, giving app creators the unique opportunity to claim a high-quality URL.
Why choose a .app domain extension?
Mobile app companies: Recruit new talent, share updates about the business, and showcase your entire collection of apps on your website.
Application developers: Grow your audience and encourage more downloads by setting up a dedicated site for your app.
Please note that .APP is intended to be a secure namespace, so all potential .APP domain owners must secure their website with an SSL certificate. .APP can be purchased just like any other domain, but the connected website will not work properly in browsers until HTTPS has been configured for the site.