iOS: Take your morning cup of coffee seriously, Brew Control is a useful iPhone app that helps keep your brewing consistent.
The app lets you choose from a variety of brewing methods, including Aeropress, espresso pourover, then set your preferred coffee to water ratio for each. Once you've set up your recipe, you can adjust the grams of coffee you'll be using, and Brew Control will tell you exactly how much water to add. The app even includes customisable timers to keep your brewing times consistent.
If you're new to coffee, the developer included his own tips and instructional videos for each brewing method. If you want to learn more, you can also check out our recent morning school series on the subject.