Fortify: Strength Training App for Women Over 40, Bone & Muscle Health

This post describes an existing and well-defined SaaS (a mobile app) that successfully targets a specific niche. Fortify addresses a critical health need for women over 40 (especially perimenopausal women diagnosed with osteoporosis and pre-diabetes) by providing progressive overload strength training programs. The app customizes workouts based on age, experience, and equipment, automatically adjusts weight/reps, tracks progress, and curates exercises based on scientific studies (like LIFTMOR) for bone and muscle health. Its success lies in identifying a demographic with specific needs not adequately met by generic fitness apps, offering a science-backed approach. The app's monetization model is a standard subscription (annual/monthly) or a lifetime purchase.