Nack is an iPhone app developed by Kaneland LLC that aims to spread kindness through cups of coffee. With just a few simple taps, users can send a cup of coffee to a colleague, a neighbor, or even a friend who is thousands of miles away. This app promotes what the developers call "Random Acts of Coffee."

One interesting feature of Nack is that occasionally companies may sponsor coffee, allowing users to receive a free cup for themselves and another to send to a friend. This adds an element of surprise and generosity to the app.

Whether you're in a cafe or anywhere else, opening Nack to send and receive a little kindness can be a heartwarming experience. The app is designed to make it easy and convenient to spread joy through the simple act of gifting a cup of coffee. Give Nack a try and see how good it feels to brighten someone's day.