Whistle

Most workout apps give you a generic plan and call it personalized. Whistle actually knows you. It reads your Apple Health data and builds a real training plan around your fitness level, recovery, and goals. Detailed workouts, smart progression, all on your iPhone and Apple Watch. Whether you're just getting started or pushing toward a new personal best, your AI coach figures out what you need and when you need it. Your data. Your plan. Your pace.