If you have an Android device:

1.- Enter the Play Store and search for 'Martennis', or you can click here.



If you have an Apple device:


1.- click here to start the installation and click 'Install'

2.- Go to Settings - General - Admin. Of devices, select 'APPS4PYMES SL', click on Trust in 'APPS4PYMES SL', Lastly, click on 'Trust'