Simple Muscle

Simple Muscle is an iPhone workout planning and tracking app built for the AI assistant you already use. Connect ChatGPT, Claude, or another compatible AI so it can create and update real workouts using your goals, preferences, and completed training history. The same workouts appear in a focused native gym experience with set logging, rest timers, exercise demonstrations, training history, and Live Activities. The core tracker also works without AI, and users do not need to pay for another proprietary AI fitness coach.

Simple Muscle is an AI workout tracker for iPhone that connects existing AI assistants to structured workout data. It provides users with the ability to create, track, and improve their workouts based on personalized advice and history. By syncing with the user's AI, it ensures recommendations reflect actual performance and user goals. Users connect their preferred AI assistant to Simple Muscle, allowing them to receive tailored workout plans and feedback. The app tracks every completed set, weight lifted, and duration, creating a structured history for the assistant to analyze. This ensures ongoing training adjustments are based on real performance data. Users also have access features like live activity tracking and lock screen controls. Simple Muscle is designed for individuals looking to enhance their workout experience through integration with AI technology. It caters to fitness enthusiasts who already use an AI assistant and want a structured, data-driven approach to training without compromising on personal guidance. Users can benefit from tracking their workouts and receiving tailored updates through their AI.