Muscle Booster Workout Planner typically offers a free version with limited features, as well as a free trial period for its premium subscription, allowing users to explore the full range of functionalities before committing.

While some features of Muscle Booster Workout Planner may require an internet connection for updates and syncing, many workouts and features can be accessed offline once they are downloaded.

You can contact support or provide feedback for Muscle Booster Workout Planner through the app's help section, which typically includes options for sending inquiries via email or accessing a support website.

You can manage or cancel your Muscle Booster Workout Planner subscription through your account settings within the app or on the app store platform where you purchased the subscription. Detailed instructions are usually provided in the app's help section.