CryptoSafe is a lightweight, offline-first Android app for military-grade text encryption. Your data never leaves your device. Features: • Strong Encryption: AES-256-GCM with Argon2id key derivation (128 MiB, 4 iterations) • 100% Offline: No internet permission needed. Your data never leaves your device • Screenshot Blocked: FLAG_SECURE prevents accidental leaks • Zero Storage: No logs, no cache, no database • Modern UI: Material 3 design with dark theme and smooth animations • Copy & Clear: One-tap copy and quick clear of sensitive fields Perfect for journalists, activists, and anyone who needs to encrypt sensitive text messages without relying on cloud services or internet connectivity.