Agree with chanchan05, why get so nervous? This is quite normal that apps ask your permission first and then allow you to access people in your contact lists. This is quite normal in many apps. If you don't want it to access your contact list, you can simply deny it. I have been using Dingtone for quite a long time, I got a US phone number before I go on a short-term trip to Italy, this app helps a lot. So if you want a 2nd number for international calls and texts but don't want a carrier, this app is definitely the best choice. The international calls have a cost, but much cheaper than regular phone calls. But if you have credits, then the calls are free indeed. Dingtone-to-Dingtone calls are totally free over wifi or cell data. I and my family and friends always talk and text on this app, it works great. btw, it also works on iPad as long as you installed this app on it. I love this app and I will recommend it to others if they need something like these.
though ding tone for free and can u call people for free even if its an international call when we both have the ding tone application?? on your mobile or tablet? 
