SMD - Grupo Salamandra is a free Android lifestyle application developed by Magentalabs.es. The app is designed to allow users to purchase advance tickets and join guest lists of Grupo Salamandra's nightclubs in Valencia and Madrid. With SMD, users can avoid long queues and secure their spot at their preferred venue.

The app has a simple and user-friendly interface that makes it easy for users to navigate and find what they are looking for. Upon opening the app, users are presented with the option to choose between Valencia or Madrid as their preferred location. Once selected, users can view the available events, purchase tickets, and join the guest list. The app also features a map view that shows the location of the nightclubs.

Overall, SMD - Grupo Salamandra is a convenient and useful app for anyone looking to enjoy a night out at one of Grupo Salamandra's nightclubs. It is a great way to avoid long queues and secure your place at the venue of your choice. However, the app is limited to only two locations, which may not be suitable for users outside of Madrid and Valencia.