Secret Delivery vs Cipher Pixel

Secret Delivery encrypts your files and text so only the people you choose can read them. No accounts. No servers. No tracking. Your password never leaves your device — and neither does your data. FREE TO START • Encrypt and decrypt text messages — free, forever. • Share encrypted text as a secretdelivery:// link, or copy and paste the ciphertext anywhere. PRO UNLOCK (one-time purchase) • Encrypt and decrypt files of any type. • Quick Look previews of .sdenc files right inside Files and Finder. • Import from Camera and Photos, and save to iCloud Drive. • Face ID / Touch ID lock and configurable autolock. • Run encrypt and decrypt from Shortcuts, Siri, and Spotlight — or with a long-press in Files. STRONGER ENCRYPTION • New files use AES-256-GCM with PBKDF2-HMAC-SHA256 key strengthening (600,000 iterations), a random salt and nonce per file, and an authentication tag that detects tampering. • Your existing encrypted files still open — Secret Delivery detects the format automatically. Need to send a file to someone on an older version? Turn on Legacy Mode for the session, or upgrade old files in place. PRIVATE BY DESIGN • Everything happens on-device. We collect nothing, and there is no analytics SDK. • The app blurs its contents in the app switcher and wipes temporary decrypted files when it moves to the background. EXISTING CUSTOMERS Already bought Secret Delivery? Thank you — everything stays unlocked at no extra cost. Just open the app on your Apple ID and Pro is restored automatically.

Cipher Pixel: Hide Messages in Your Photos With Cipher Pixel, you can securely send hidden messages or keep them safely hidden within images in your gallery. Cipher Pixel makes it easy to hide secret messages in your photos. Using the ancient technique of steganography, this app conceals information within the pixels of your images. Unlike cryptography, which scrambles data into unreadable text, steganography hides data in plain sight, ensuring secrecy without drawing attention. Why Choose Cipher Pixel? Seamless Integration: Effortlessly hide messages in your photos without changing their appearance. User-Friendly Design: Encode and decode messages with ease using a simple interface. Advanced Security: Encrypt your secret messages using the AES algorithm before embedding them in your photos, ensuring that your hidden data is protected with an extra layer of security. How It Works: Encode: Input your message, and Cipher Pixel transforms it into bits. Encrypt: Secure your message with AES encryption before hiding it in the image. Embed: Select a photo, and let Cipher Pixel discreetly hide your encrypted message within its pixels. Share Securely: Share your photo confidently, knowing your hidden message is safe. Additional Note: Once you have created an image with a secret message hidden in the Cipher Pixel app, be careful not to resize or compress the image when sharing it. When sending an image using messaging applications, the image must be sent as a 'Document'. If you send it as an image, the saved message may be lost. This is because messaging applications change the image format.