https://www.cnet.com/news/ces-2019-bowflexs-smart-coaching-app-brings-a-digital-trainer-to-your-house/

Download the app for Android or iPhone -- it costs $14.95 per month or $149 per year -- and complete Bowflex's "fitness assessment." This gives the software a baseline to determine the length and difficulty level that's best for you.

It also claims predictive capabilities that are supposed to automatically adjust your next workout based on your previous one.