This new mobile app is designed especially for caffeine addicts: it helps control caffeine consumption and tells you if the cup of coffee you’ve just drank can affect your sleep, Daily Mail reports.

The Up Coffee app has been developed by Jawbone Labs, and they say it can help you understand more about your caffeine choices by correlating caffeine intake and projected sleep time. To find out if you can drink another cup of coffee and after how many hours you’ll be able to sleep, just log a coffee, tea, energy drink or other caffeinated beverage in the UP Coffee app.

If you use the app for 10 days, it will track down both your caffeine intake and sleep and give you a small report on the amount of sleep you lose on average for every 100mg of caffeine you ingest.

“With billions of people around the world enjoying coffee, tea and other caffeinated drinks each day, the UP Coffee app delivers daily insights with new information on caffeine that’s relevant to you,” Jawbone Labs’ guys said.