stone call

Stone Call is a managed voice, video, and messaging service for small teams, built around a Swiss Destroy design language: stark typography, monospaced rhythm, and the data laid bare. Sign up, sign in, and start calling — there is no PBX to configure, no carrier contract to sign. We run the infrastructure.

CORE FEATURES

Voice & Video Calls HD voice and video over WebRTC, optimized for LTE and Wi-Fi. Automatic ICE Restart handles network handovers without dropping the call.

System Call Integration Incoming calls appear as native system call screens — same look as a regular phone call, lock-screen aware, audio routing handled by the OS.

Messaging Send text, images, and files alongside calls. RCS-style message revocation. Real-time delivery with media stored on a hardened, CDN-fronted file backend.

Linked Devices Pair phone, tablet, and work phone under one identity. Calls and messages reach every device you own. Manage and unpair sessions from settings.

Notes Room A private chat with yourself, synchronized across every device you are paired on. Stash drafts, paste links, send files between your own phones.

Contacts & Call History Local contact database. Inbound and outbound call records are auto-generated and searchable.

Phone Numbers Lease a real phone number based on your location. Your number is restored automatically across reinstalls using a stable device identifier.

Push Notifications VoIP push notifications ensure calls reach you even when the app is fully terminated.

PRIVACY

• App Tracking Transparency on iOS.
• TLS-encrypted call signaling.
• SRTP-encrypted media transport.
• Account deletion built into settings.
• Privacy policy and terms of service available inside the app, with multilingual support.