Do these bikes support apps and class subscriptions?

Several models (the YOSUDA app-enabled bike, Merach, and Sunny Health's SunnyFit) include companion apps with guided workouts, and most others include a tablet mount so you can run third-party fitness apps. Verified-purchase reviewers note these proprietary apps vary in quality and sometimes push paid tiers, so check whether the free content meets your needs before buying for the app alone.