When Wunderman hired my partner, me, and a UX designer to build an app from the ground up, I hadn’t realized at the time how unique this opportunity was. Most apps are designed by teams with far more experience than we had.
As with most apps, staying power is a goal, so we as a team looked for incentives to keep the app even after quitting smoking was achieved.
Knowing that money saved can not only be an incentive but an ongoing reminder quitting smoking is quite an accomplishment. We developed modules that had ongoing accounting of this. For example, modules that told you how much money you were saving of how much more life you were regaining gave users a reason to keep the app.