Crypto String is the ultimate secure text encryption app using military-grade AES-256-GCM with authentication. Protect your sensitive information with powerful encryption and Base64 encoding — all 100% offline and private.
Core Features
• AES-256-GCM Encryption – Military-grade algorithm with custom keys for unique results
• Base64 Encode/Decode – Fast and reliable for data transmission and storage
• File Import – Directly import text/keys from local files or iCloud Drive
• Smart Key Management – Import keys + eye-icon toggle to view/hide safely
• History Records – Auto-save last 10 operations with key hints (only first 4 chars)
• Bilingual Interface – Full English & Simplified Chinese support
• Dark Mode + iOS Native – Built with Apple CryptoKit for maximum security
Security First
• 100% Local Processing – Nothing uploaded to cloud
• No data collection, no accounts, no tracking
• Keys never stored in plain text
• One-time purchase, no ads, no subscriptions
Perfect for protecting passwords, notes, private messages, or business data. Simple, fast, and truly private.
Download Crypto String now and encrypt with confidence!
Core Features
• AES-256-GCM Encryption – Military-grade algorithm with custom keys for unique results
• Base64 Encode/Decode – Fast and reliable for data transmission and storage
• File Import – Directly import text/keys from local files or iCloud Drive
• Smart Key Management – Import keys + eye-icon toggle to view/hide safely
• History Records – Auto-save last 10 operations with key hints (only first 4 chars)
• Bilingual Interface – Full English & Simplified Chinese support
• Dark Mode + iOS Native – Built with Apple CryptoKit for maximum security
Security First
• 100% Local Processing – Nothing uploaded to cloud
• No data collection, no accounts, no tracking
• Keys never stored in plain text
• One-time purchase, no ads, no subscriptions
Perfect for protecting passwords, notes, private messages, or business data. Simple, fast, and truly private.
Download Crypto String now and encrypt with confidence!
Show More
