By unchaining your calls and texting from one specific phone or device, TextNow is able to provide a feature that literally no-one else can. It's all part of how we're trying to make communication available for everyone, regardless of platform
The first and the main reason why I use this service is that it is absolutely FREE. The most of mobile operators in the United States are quite expensive (comparing to Eastern Europe, for example), meanwhile TextNow and textnow customer service are accessible for everyone. I don't know any decent alternative to this company.