The $99/month plan, which includes renting the Lief device and one-on-one coaching, is most popular with new customers. If you're unfamiliar with biofeedback training, starting out with a Lief coach can be particularly helpful.

Your coach will help you stay engaged by checking in with you at least twice a week, and train your HRV higher by setting weekly goals with you. Then, once you get the hang of it, you can switch to the $69/month plan by canceling coaching in the Lief app (Menu > Coaching), and continue to track your HRV and participate in the biofeedback training (a.k.a. Downtime) on your own.