Vaani is a free Android application developed by Innovations in Action that allows you to make international calls worldwide using the internet. With Vaani, you can make international calls to mobile and landline phones at competitive rates without paying extra for international minutes with your mobile carrier. The app provides superior voice quality and allows you to earn free credits by viewing ads and make free calls worldwide.

In addition, Vaani allows you to check call rates, view call logs, payment details, report issues, and view call history. You can use Wi-Fi/3G/4G data networks to make calls and send airtime/data top-ups to your friends and family. The app also offers video calling and provides an easy user interface to navigate between various screens to make calls, buy more credits, check calling rates, check call reports, and view ads. To use Vaani, you need to sign up by specifying your mobile number, password, and email address. You can then use in-app purchases to add credits and make international calls.