Stockholm's Truecaller has done a somewhat unique partnership with Twitter, allowing Truecaller users starting in India to see if a number is connected to a Twitter account, allowing them to tweet at a user through the Truecaller app and use a small byte of their data plan, rather than picking up a potentially more expensive call. This is unique because it's the first time Twitter is allowing access to connected phone numbers in this way, picked up by authentification through Twitter's two-step authentification process, or by grabbing phone numbers through cheap compressed social media plans offered by low-cost carriers.
Truecaller has apps available for iPhone, Android, Windows, BlackBerry, and Symbian system. This wide platform reach has made them popular in India, where most people are on unlisted pre-paid phone numbers that were impossible to keep track of before Truecaller's crowdsourced directory was created.
“Our partnership with Twitter is an unparalleled opportunity to enhance the Truecaller service and insert a more robust social element to the experience," says Alan Mamedi, CEO & co-founder at Truecaller in a statement. "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.”
One can also assume the benefit to Twitter is strengthening their foothold in developing markets for people who like a quick way to communicate.
Last June Truecaller boasted 20 million users, and has now impressively doubled to 40 million users.
Truecaller’s Twitter integration is currently available for Android users, which makes sense considering this focus on India, and has plans to expand to iOS in 2014.