I was looking for an easy way to better track my caffeine just to be more mindful of my consumption & have it sync to the Health app. This does just that & I love it so far. I love how I can add my own drinks I commonly use as well as being able to quick add using force touch. The “ready to sleep” might be iffy for me. I know it more than likely uses the overall half-life of caffeine, but I wish it would also factor in weight with the metabolism. Other than that, I am loving how easy it is to use & trackZ

This app does a pretty good job tracking caffeine intake in its many forms. I like the graph showing how it slowly dissipates from your system. Americans should note that many of its preloaded caffeine types are products and stores found in Germany since the developer is presumably German. It’s nice that you can add your own categories and forms of caffeine. I added dark chocolate to my list of groups. The app could be improved by allowing users to set physical characteristics that determine caffeine affects each user according to body weight, or other factors.

I bought this because it thought it works like water WaterMinder and you can easily input your usual coffee shot with 1 tap. I was surprised to find it doesn't allow caffeine input from the Watch app and I find it useless now.Edit: it seems that the watch app hadn't been loaded properly when I tried it. The app allows for caffeine input indeed, however, there is no way to set drinks without a group, which means you need to go inside the ground (add an extra tap)each time you want to input caffeine.

As a caffeine junky I needed a reliable app to log my intake, and keep track of levels to know when to stop for adequate sleep, not only does this app hit the nail on the head, it also allows for Apple health sync, very easy to use interface and also allows for manual input of caffeine products to its already diverse library.