Useless. It continuously spams you with junk ads in your alerts every few seconds. Therefore, you must turn off alerts, including new message alerts, and if you don't respond soon enough then bumble will block you from ever communicating with that person ever again. They also limit the amount of people you can "like"/accept, but you can reject as many people as you want, so if you aren't getting rejected enough in your life, this app will make sure to encourage everyone to reject you.