The best serenity gym apps and games on iPhone average 4.4★ across 223+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
This app offers a mental training program combining CBT and Stoicism to help users build resilience and overcome stress. It uses Socratic questioning and daily challenges to foster personal growth and antifragility.
Build and manage your own exclusive fitness club. Attract top athletes, equip your gym with the latest machines, and offer personalized training programs. Expand your empire by opening multiple clubs with enhanced starting conditions.