CypherKeep is a native macOS credential manager built for developers and security professionals.

Store API keys, seed phrases, and sensitive notes — encrypted locally with AES-256-GCM. No cloud, no accounts, no sync servers.

The standout feature: paste any API key → auto-detects the provider → tests it live → 🟢🟡🔴. Supports OpenAI, Anthropic, AWS, GitHub, Stripe, Supabase and more.

Also: BIP39/SLIP39 seed phrase validation, Touch ID unlock, clipboard auto-clear, encrypted full-text search.

Built solo with Swift, SwiftUI, CryptoKit, Argon2id, SQLCipher.