About this app
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.
Latest release
What’s New
Secret Delivery 4.0 is a complete, ground-up rewrite. A NEW APP • Native SwiftUI design for iPhone, iPad, and Mac — light/dark mode, Dynamic Type, and a real Mac sidebar, toolbar, and keyboard shortcuts (⌘N, ⌘O, ⇧⌘L). FREE, WITH PRO UNLOCK • Text encryption and decryption are now free for everyone. • Pro Unlock (one-time) adds file encryption, Quick Look previews, Camera/Photos import, iCloud Drive, Face ID / Touch ID, and autolock. • Already a paying customer? Everything stays unlocked automatically — thank you. STRONGER ENCRYPTION • New files use AES-256-GCM with PBKDF2 key strengthening (600,000 iterations) and built-in tamper detection. • All your existing .sdenc files and secretdelivery:// links keep working — the format is detected automatically, with an optional Legacy Mode for replying to people on older versions. PRIVACY & SECURITY • App-switcher blur, automatic wipe of temporary decrypted files, and on-device-only processing.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 3, 2026 · 10:12 PM $0.99
Screenshots
