Continuo tracks up to eight activities on a calendar. You can assign each activity a color so you can quickly glance at your calendar to see just how well you’re doing at any given point. Each activity also gets a bar graph, so you can note approximately how much time you spend on an activity per day. If the white design isn’t your thing, there’s a dark mode as well. It’s a simple app that does one thing, but it does it well, so if you’re tracking your habits, it’s worth a look. You can try it out with one activity for free, or pay $1.99 to unlock the whole app.