The client view is exactly the same as when a trainer opens up a client's account to look into it, but without the editing controls. What you see is what the client gets.
Any prescribed habit will simply appear on their "Things to do today" section on their Dash, or on their calendar. They can simply tap on it to open and tap "Complete" when they mark it as done.
Why habit tracking is mobile-only
With habits, repetition and ease of tracking is key to ensure a client forms a new habit. It is critical that clients track habits on the spot, as soon as they complete them. As such, habit tracking is only available to clients via the mobile app as they will always have their phones with them.