Caller Key Features

Browser-based Calling

Make and receive calls directly from any web browser — no app installation, VoIP setup, or SIM required.

Call any phone number worldwide with pay-as-you-go pricing from $0.02/min and transparent, no-hidden-fee billing.

Quickly enter a number or paste a contact, connect instantly, and view recent calls and call durations in your browser history.

Encrypted call setup and optimized routing for stable voice quality across international destinations.