Encrypted File & Media Sharing
Share large photos, 4K videos, voice notes, and documents with AES-256 chunked stream encryption. Zero unencrypted media stored on servers.
File Encryption Architecture
High-speed media transfer engineered for extreme privacy.
AES-256 Chunked Streaming
Large files are sliced into smaller cryptographic chunks directly on the device, encrypted via individual AES-256-GCM keys, and streamed instantly.
Unlimited File Size Support
Share high-res photos, 4K video recordings, vector files, and massive PDFs without compression artifacts or file size limits.
Immediate Server Deletion
Relay buffers hold encrypted ciphertext payloads only until recipient devices acknowledge download, after which buffers are permanently purged.
SHA-256 Checksum Integrity
Every transferred payload is verified using SHA-256 hash checksums on the receiving handset to prevent data corruption or tampering.
Explore Other Core Features
Discover CALL's end-to-end encrypted capabilities.
Encrypted Chat
1-on-1 E2EE messaging with Double Ratchet security.
Group Chats
Multi-recipient Sender Keys encrypted group conversations.
HD Voice Calls
Crystal-clear 48kHz Opus audio over DTLS-SRTP WebRTC.
HD Video Calls
1080p 60FPS encrypted video stream with zero facial mining.
High Performance
Microsecond DB queries, 0.08s warm launch, zero battery drain.
Share Files Privately & Securely
Available on iOS and Android. Experience unlimited secure file transfers today.