Ive had this app for roughly two years, and during that time it has served me very well. I use it as a texting app, as I have an iPod and cannot text my non-Apple-user friends. However, I am just now realizing that the call option is sincerely free for phone numbers in the United Statea of America and Canada. I always thought that the credits displayed in the top corner of the menu bar were the credits I had for overall calling, but it turns out those are simply credits for international calling. For those of you that need to be able to call internationally and have no desire to pay outrageous amount of money for that ability, TextNow offers cheap in-app purchases for credits, but also offers video you can watch to earn credits for free, as well as tasks you can complete to earn even more credits. This is a great app and I highly recommend it.