The software and the service are totally free. To send your SMS you have to download and install the program on your mobile phone and register to CheapTXT, so you then get a password to use our services. See
installation to know how to download and install the service on your mobile phone and
setup to know how to implement the settings. To send SMS from your mobile you don't use the services centre of your operator, so you won't be charged with the cost of SMS but just for GPRS or UMTS traffic. The cost of the traffic depends on the amount of data exchanged. In our case the cost should be less than 1p. Try to do a connection test after the installation. The test is free and allows you to know the cost of the connection and if your internet connection phone settings are ok.