Open Source · Source Available

Your voice
belongs to you.

End-to-end encrypted voice calls with zero metadata collection. Built with Rust cryptography. Verified by anyone.

Download for Android View Source

XChaCha20 Encryption

0 Metadata Stored

Rust Crypto Engine

Call Encrypted

XChaCha20-Poly1305

02:47

Features

Privacy by design,
not by promise.

Every architectural decision puts your privacy first. No compromises.

End-to-End Encryption

XChaCha20-Poly1305 AEAD encryption with X25519 key exchange. Every call gets a unique session key. We can never listen in.

Zero Metadata

No call logs, no contact uploads, no tracking. Your IP is masked through relay routing. We store nothing about your communication.

Source Available

The complete source code is on GitHub. Don't trust us — verify our security claims yourself. Full transparency.

Rust Crypto Engine

The cryptography core is written in Rust for memory safety. No buffer overflows, no use-after-free. Independently auditable.

Crystal-Clear Audio

Opus codec at 48kHz delivers natural voice quality even on poor connections. Adaptive bitrate for WiFi and cellular.

Perfect Forward Secrecy

Double Ratchet protocol ensures that compromising one key doesn't expose past or future calls. Every session is independent.

How It Works

Encrypted in seconds.

No accounts, no phone numbers, no personal data required.

Install

Download from Google Play. No email or phone number required.

Generate Keys

Your device creates a unique X25519 key pair locally. Keys never leave your phone.

Share ID

Exchange your anonymous SecureCall ID with your contact via any channel.

Call Securely

End-to-end encrypted call is established. No one can listen — not even us.

Security

Security you can verify.

We don't ask for trust. We provide proof. Every claim is auditable.

Encryption

XChaCha20-Poly1305

256-bit AEAD cipher with 192-bit nonce

Key Exchange

X25519 ECDH

Elliptic Curve Diffie-Hellman on Curve25519

Forward Secrecy

Double Ratchet

Per-session key derivation, zero key reuse

Audio Codec

Opus @ 48kHz

Adaptive bitrate 6-510 kbps

Transport

WebRTC + DTLS-SRTP

Peer-to-peer with encrypted transport

Crypto Engine

Rust (memory-safe)

Zero buffer overflows, zero use-after-free

Read Full Security Architecture →

Open Source

Don't trust.
Verify.

SecureCall's source code is publicly available on GitHub. Audit our cryptography implementation, verify our privacy claims, and inspect every line of code that handles your voice data.

We believe that true security requires transparency. If we can't show you how it works, you shouldn't trust it.

View on GitHub

// core_crypto/src/lib.rs
pub fn encrypt_voice_frame(
    frame: &[u8],
    key: &SessionKey,
    nonce: &XNonce,
) -> Result<Vec<u8>> {
    let cipher = XChaCha20Poly1305::new(key);
    cipher.encrypt(nonce, frame)
        .map_err(|_| CryptoError::EncryptionFailed)
}

Pricing

Choose your level of privacy.

Every tier includes end-to-end encryption. Upgrade for advanced protection.

Free

$0 forever

E2E encrypted calls
Standard audio quality
Up to 10 contacts
15 min max call duration
Screen capture detection
Anti-recording protection
GhostNet IP masking

Get Started

Forever Licenses — No Subscription

One-time purchase. Lifetime access. Only 100 licenses per tier. Price increases with every sale.

Limited: 100 Licenses

Pro Lifetime

$15 one-time

Licenses remaining 100 / 100

Next buyer pays: $15.35 — Price rises to $50 at sellout

Everything in Pro
No subscription — pay once
Lifetime updates included
Early adopter pricing

Buy Pro Lifetime

Limited: 100 Licenses

Premium Lifetime

$25 one-time

Licenses remaining 100 / 100

Next buyer pays: $25.75 — Price rises to $100 at sellout

Everything in Premium
No subscription — pay once
Lifetime updates included
Early adopter pricing

Buy Premium Lifetime

Lifetime licenses are available exclusively in the app. Download SecureCall and tap "Upgrade" to purchase.

FAQ

Common questions.

Everything you need to know about SecureCall.

No. Calls are encrypted end-to-end using XChaCha20-Poly1305. Encryption keys are generated on your device and never sent to our servers. We have zero technical ability to decrypt your calls, even if compelled by a court order.

Transparency builds trust. By publishing our source code, we allow anyone — security researchers, journalists, privacy advocates — to verify that our encryption works as claimed. Security through obscurity is no security at all.

The Free tier collects anonymous crash reports (opt-out available). Pro collects nothing. Premium collects absolutely nothing — not even your IP address (masked via GhostNet). See our Privacy Policy for full details by tier.

Pro and Premium tiers include active protection against screen recording, microphone hijacking, and spy apps. The system detects recording attempts and responds based on your tier: Pro blocks the threat, Premium automatically terminates the call to protect you.

Your voicebelongs to you.

Privacy by design,not by promise.

End-to-End Encryption

Zero Metadata

Source Available

Rust Crypto Engine

Crystal-Clear Audio

Perfect Forward Secrecy

Encrypted in seconds.

Install

Generate Keys

Share ID

Call Securely

Security you can verify.

Don't trust.Verify.

Choose your level of privacy.

Forever Licenses — No Subscription

Common questions.

Ready to take backyour privacy?

Your voice
belongs to you.

Privacy by design,
not by promise.

Don't trust.
Verify.

Ready to take back
your privacy?