In-App Voice calling
Build trust and meaningful customer relationships while keeping costs down, and scale as you go with our flexible in-app calling solution. With our scalable in-app voice calling SDK, you’ll have them at hello!



Hassle-free, scalable calling experience
Level up user experience
Get real-time insights into caller identity and history for quicker, personalized problem solving.
Connect with confidence
Connect users without revealing phone numbers, keep identities secure, and transactions on-platform.
Future-proof your business
Upgrade your in-app contact center and CRM platform with high-quality in-browser calling in no time!
Cost-effective, high-quality calling
Everyone loves crisp, high-quality calls, and now you can have them all the time, both app-to-app and app-to-phone. Built with users in mind, our APIs and SDKs are scalable, flexible, and super easy to use.
We use our industry-leading infrastructure, enterprise-grade platform, and data-optimized routing to power calls across the globe. Give your calls the quality they deserve!


We opted for Sinch due to the quality, ease of integration and excellent customer support.


9K
minutes of calls per day
3M+
users worldwide
20%
of people in Cuba use the app
