The Basic CallWave package is free. Also, CallWave is giving 30days free trial on their internet call alert services. CallWave is safe and it's very easy to be used. You DON'T even need to use your credit card online to purchase CallWave service. 11 millions United States citizens have subscribed to CallWave, you too can have a try on it with the 30 days risk-free trial on ANY one of the CallWave packages.