If you are a client of Tetra fitness club, you can be mobile with this app. Install it on your phone and you can: - always have information about their services (subscriptions, deposits) - independently register for individual and group classes - reserve club resources, such as: courts, halls, fields - have a reminder of reserves - lay routes to the club, see the time you need to get to the club - you can not carry a club card with you - with the application you can identify yourself in the clu