Under the partnership, Truecaller users in Indiawill be able to see if a number is connected with a Twitter account, and will be able to tweet or follow a person directly through the Truecaller app.
"With this new integration, a Truecaller user can instantly tweet back to a missed call that has a Twitter account connected to the phone number. This is especially valuable for users in India who are looking for a fast, free and reliable way to communicate," TrueCaller CEO and co-founder Alan Mamedi said in a statement.
The company, however, did not mention details about its user base in India. Twitter had about 20 million users in India as per a report by market research firm IMRB International and the Internet and Mobile Association of India released few months back.
Truecaller is a free mobile application which shows name of the person calling to the user even if the number is not saved in the phone. The application is currently available on Apple's iOS, Android, Blackberry, Windows Phone, Nokia, and Symbian devices.
Truecaller's Twitter integration is currently available to Android users, with plans to expand to iOS in 2014, the statement said.
TrueCaller has also overhauled the user interface of its Android app, bringing larger pictures and a more personal experience for users, as per the Swedish startup.
It has also introduced new badgers for users. The Verified badge indicates that a user's name is true, according to Truecaller phone community, while the Premium badge would be placed next to the profile of a user who has upgraded to a Premium account. Similarly, the Ambassador badge would represent the Truecaller Team members and Truecrew Brand Ambassadors.