VoipWise is a mobile application that allows you to save money on your monthly calling charges by over 80%. This VoIP service provides the cheapest rates available for all destinations, and even offers free calls to selected countries for the first 90 days after buying 10 euro credit. You can make international calls through WiFi or 3G networks, and send SMS text messages at the lowest tariffs.

The app lets you import contacts from your regular contact list or VoipWise client and choose any contact to call. It's easy to get started with VoipWise, simply download the free dialer app, register a username or log in using your existing credentials, and buy some credits. However, it's important to note that using this app as a default dialer may interfere with dialing 911 emergency services.

With its user-friendly interface and reliable service, VoipWise is a great option for anyone looking to save money on international calls and text messages.