Slickcall is a powerful international calling platform built to eliminate global communication barriers. We developed both the mobile app and website to provide a seamless, secure, and cost-effective calling experience worldwide. With over 22 million users, Slickcall enables affordable international calls, even to recipients without internet, by combining VoIP with traditional telecom networks alongside mobile top-ups, eSIMs, virtual numbers, and money transfers.
Slickcall needed to connect users with people who may not have internet access, deliver ultra-low international calling rates without compromising quality, and support millions of users with high call volumes and real-time processing.
We integrated VoIP with traditional telecom networks to enable calls to both internet and non-internet users, with optimized routing algorithms delivering high voice quality at the lowest possible cost. End-to-end encryption protects privacy and data, secure global transactions run through PayPal and Cash App, and cloud infrastructure handles millions of simultaneous users and calls.
