Viber and NimBuzz are one of the most used free calling apps . In order to compare them i have to give you the most important details for me as a user :
Viber
- Free Voip calls , free instant sms and location-sharing with Viber users
- no registration , password or invitation required
- automatic detection for your contacts who already use Viber
- available on IOS , ANDROID , WINDOWS PHONE , BLACKBERRY , NOKIA and BADA .
NimBuzz
- Free Voip calls , free instant sms
- you need registration and invitation required
- automatic detection for your contacts who already use Nimbuzz to send them an invitation
- available on PC , IOS , ANDROID , WINDOWS PHONE , BLACKBERRY , NOKIA and JAVA
After using Viber and NimBuzz i have realized these points :
- both insure free calls and sms
- registration required for Nimbuzz and for Viber not
- Viber interface is like your phone contact list . otherwise , Nimbuzz interface is like IM software
- Nimbuzz support java and pc so it can be used for a large number of users
- it does not support ads plus it constantly runs in the background without draining the battery of your phone.
Finally , it's for you to choose which app is adapted for you .