Habitify keeps things simple with their straightforward habit tracker that operates on a. setting up your habits, b. getting cues that remind you to perform a habit, and c. visualizing your progress with various habits over time.
The app's features are thoughtfully constructed, taking into account real-world usage of various habits. For example, you can create a habit for meditation and also track the time you meditate in each setting, which is the behaviour of a lot of people building a meditation habit.
Another useful feature is the ability to group habits. Sort of like folders, but for a set of habits that belong to a broader goal. The app also gives you the ability to add notes, which serve as a record of your thoughts as you progress through your habits journey.
Habitify also hands-down has one of the nicest looking landing pages.
Habitify is available as a free app and is supported by in-app purchases that start at $4.99 for a monthly membership all the way to $64.99 for a lifetime membership.