Requires to earn credits for talk time

I tried out this app because it was advertised that its free for both voice and texting. However, I just found out that TextMe is actually not 100% free as you may think. The catch here is that you need to earn credits for the talk time. I know other VOIP app that really call for free without the need to earn credits, except texting. So, I have uninstalled TextMe.

User94736382938CA about Text Me - Second Phone Number, v2.8.4