If you have ever needed to collaborate with a college on a task you know that if you use email it can get cumbersome and quite annoying to have to sort through all the email. So when you are able to collaborate on this tasks in a more organized and accessible manner the whole project becomes a lot easier. This is what Flow has done. For $9.99 USD a month (with discounts for a larger group of accounts) you can keep track of not only the things you need to get done for yourself but you can also collaborate with people on work tasks or even personal events like parties.
All of this is extremely helpful but there are some flaws in the execution of Flow, things that could be easily fixed. One major problem with the service is that every time somebody comments, flags, completes, or reopens a task you receive an email. Of course you are able to disable them but the mobile app for iOS doesn’t use push notification, which would take a large stress off from your inbox. The fact that when you aren’t checking your email, to receive any sort of notification from the app is simply impossible which really kills the functionality of the service.
The team at MetaLab has created a sample video (below) showing a group of people using Flow to organize a party on very short notice.