Product Overview

Silo is a high-security privacy application built natively for both iOS and macOS using SwiftUI. It provides a full suite of privacy tools including a secure App Lock, a Private Web Browser, an Encrypted Photo Gallery, and an Encrypted File Vault. The project is designed with Apple developer account capabilities in mind and integrates RevenueCat for subscription entitlement checks.

Technical Stack

• Frontend: Swift & SwiftUI (iOS 18.0+ / macOS 15.6+)
• Cloud Storage: Dropbox API Integration (with stubbed OAuth hooks for Google Drive)
• Database & Local Storage: Local secure encrypted directory vault
• Monetization: RevenueCat SDK

Libraries & Dependencies (Swift Package Manager)

• purchases-ios-spm (RevenueCat subscription integration)

Core App Features

1. Biometric App Lock

• Biometric Authentication: Secure application entry using FaceID, TouchID, or passcode.
• Device-level Security: Auto-locks whenever the app enters background.

2. Hide Photo Gallery & File Vault

• Local Storage: Keeps images, videos, files, and folders secure.
• Dropbox Cloud Import: Import files from Dropbox directly (configured via App Key and redirect URIs).

3. Private Web Browser

• Incognito Browser: Surf the web securely.
• No Trace: Automatically clears cache, cookies, and history when closed.

4. RevenueCat Entitlements

• Usage Limits: Subscription plans gate advanced features like cloud storage backup.
• Weekly Usage Limits: Offers custom limits depending on RevenueCat metadata setup.

5. Cross-Platform Build

• Universal App: Unified SwiftUI layout runs natively on iPhones, iPads, and Mac computers.