CypherAir brings OpenPGP encryption to iPhone, iPad, and Mac — fully offline. Encrypt, decrypt, sign, and verify, with no accounts, no servers, and no tracking.
Available now · iOS 26.5+ / iPadOS 26.5+ / macOS 26.5+
CypherAir is a complete OpenPGP toolkit that never touches a network. It works in airplane mode — because nothing it does requires anyone's servers, or anyone's permission.
No network code, no analytics, no update checks. Every cryptographic operation happens on your device.
Built on OpenPGP: compatible with GnuPG 2.1+ today, ready for RFC 9580 — v6 keys, Ed448/X448 — tomorrow.
A guided tutorial runs in an isolated sandbox, so you can practice safely before touching real keys.
Private keys are wrapped with Secure Enclave protection and unlocked by Face ID, Touch ID, or your passcode.
Encrypt text and files with streaming performance. Sign what you send; verify what you receive.
Export passphrase-protected key backups and revocation certificates — only when you choose to.
No servers to subpoena.
No accounts to leak.
No data to sell.
What doesn't exist can't be taken.
CypherAir handles the OpenPGP details. You keep a workflow anyone can follow.
Generate a modern key pair on your device, in seconds.
Share by QR code, file, or clipboard — and confirm fingerprints.
Pick recipients, seal your message, and share it anywhere.
Unlock locally, read the message, and see exactly who signed it.
CypherAir's cryptographic core is built on Sequoia-PGP, the modern OpenPGP implementation written in Rust. Profile A uses v4 keys and SEIPDv1 for GnuPG 2.1+ compatibility; Profile B uses v6 keys and SEIPDv2 AEAD OCB for RFC 9580-capable tools.
Download CypherAir and start communicating privately today.