Simplify mobile
number verification
and onboarding

Use the free Truecaller SDK to
verify mobile numbers without
unreliable OTP SMS.

Sign in with Truecaller
Used by top developers
Shopclues
Zoomcar
Grofers
Times of India
Quikr
Oyo

Reduce drop-offs
while onboarding

Complete verification in seconds

Same user across
all your apps

One user, one verification

Genuine user
details auto-filled

Trusted Truecaller mobile identities

With Truecaller SDK
  • Tap “Sign in with Truecaller”
  • Share profile
  • User number verified without OTP & profile auto-captured
  • Less than 5 seconds
Without Truecaller SDK
  • 5-10sEnter mobile number
  • 10-30sWait for OTP, try resend upon failure
  • 10-30sManually fill registration form
  • 30-60 seconds in total
CarDekho
CarDekho.com is India's leading platform that helps users buy cars that are right for them.
"At CarDekho we work relentlessly on making our users’ experience seamless and delightful. By integrating Truecaller SDK we have been able to acquire authentic details flawlessly without making users fill forms or wait for OTP for tedious verification – which has significantly improved our successful sign ups/form fills.”
Rahul Yadav - Director of Products
36%
of all users onboarded via Truecaller
12%
increase in successful user signups

"Truecaller SDK enabled us to obtain verified user identities, right at the time of signup, significantly improving sign up rates while reducing hurdles associated with OTP based registration processe...

Gaurav Agrawal - Co-founder & CTO, 1mg

"At CarDekho we work relentlessly on making our users’ experience seamless and delightful. By integrating Truecaller SDK we have been able to acquire authentic details flawlessly without making users ...

Rahul Yadav - Director of Products

"Our users while signing up on Housejoy app, now have a frictionless and one step registration with their Truecaller verified phone number. We are seeing a good chunk of our daily registrations coming...

Krishna Gadi - VP Product & Growth, Housejoy.in

Truecaller SDK

For Mobile Apps
Android, iOS, React Native
For Web Apps
Desktop, Mobile web, Progressive Web Apps
Get Started