A free app for Android, by Buddyfit.

Buddyfit is a mobile application that was created to help you train and develop as a professional fitness coach. This app offers you a free service to help you connect with your customers on a daily basis. It allows you to send an email to all the clients you have, so that they can reach you directly with any question or problem. You can also create a calendar for your clients, so that you will be able to plan and schedule your training sessions with them.

Buddyfit is a secure and confidential platform, which ensures the safety of the data.