HintLocker is a password hint storage application designed with military-grade privacy principles. Your password hints and PIN code are stored entirely offline on your Android device with zero transmission to external servers.

CLASSIFICATION LEVEL: Your sensitive data (hints and PIN) never leaves your device's secure perimeter.

INTERNET USAGE: The app requires internet connection ONLY for displaying Google AdMob advertisements. Your password hints are never transmitted over the network.

DATA COLLECTED BY HINTLOCKER:

ZERO NULL NONE

HintLocker itself does NOT collect, transmit, or store:

• Email addresses or contact information
• Names or personal identifiers
• Usage analytics or behavioral tracking
• Crash reports or diagnostics
• Precise location coordinates or GPS data
• Your password hints or PIN code

DATA COLLECTED BY GOOGLE ADMOB:

Google AdMob (our advertising partner) automatically collects:

• Advertising ID - Anonymous device identifier for ad serving
• Device information - Model, OS version, screen size
• IP address - For approximate location (country/city level)
• Ad interaction data - Which ads you view or click

All operational data is stored EXCLUSIVELY on your device using Android's secure local storage system:

• Password hints (custom cues you create)
• PIN code (encrypted and hashed)
• Application preferences and settings

AUTHORIZED PERMISSIONS:

DENIED PERMISSIONS:

HintLocker does NOT request or use:

• Camera, microphone, or media access
• Contacts, calendar, or phone state
• SMS or calling capabilities
• Location services (GPS, network, Bluetooth)
• External storage access
• Background data or battery optimization bypass

ADVERTISING PARTNER:

GOOGLE ADMOB

HintLocker displays advertisements through Google AdMob, Google's mobile advertising platform. This is the ONLY third-party integration in the app.

WHAT ADMOB COLLECTS:

Google AdMob may collect and process the following data to serve personalized ads:

• Advertising ID (anonymous device identifier)
• Device information (model, OS version, screen size)
• Ad interaction data (views, clicks, impressions)
• IP address (for general location, not precise GPS)
• App usage data (time spent, ad frequency)

WHAT WE DON'T USE:

• No analytics services (Google Analytics, Firebase Analytics, Mixpanel)
• No social media SDKs (Facebook, Twitter, etc.)
• No crash reporting tools (Crashlytics, Sentry)
• No cloud storage providers
• No tracking or profiling services beyond AdMob

GOOGLE'S PRIVACY POLICY:

For details on how Google processes advertising data, review:

Google Privacy Policy
How Google Uses Information from Sites or Apps that Use Our Services

DEFENSIVE MEASURES:

PIN PROTECTED LOCAL ENCRYPTION

Your password hints are secured using:

• Multi-layer PIN code protection
• Android secure storage encryption
• No network exposure or attack surface

HintLocker collects zero personal information from ALL users, including minors under 13 years of age. The application is COPPA-compliant by design through complete data non-collection.

Since HintLocker operates on a zero-data-collection model, users have:

• 100% DATA OWNERSHIP: All data remains on your device
• FULL CONTROL: Delete anytime via app uninstall
• NO OPT-OUT NEEDED: Nothing to opt out of
• NO REQUESTS REQUIRED: No data exists on external servers

Any modifications to this privacy protocol will be reflected in:

• Updated "LAST UPDATED" timestamp
• In-app notification (offline access required)
• GitHub repository version control

Users maintain the right to review historical policy versions.

HintLocker's offline-first architecture guarantees:

AD-SUPPORTED NO USER TRACKING NO DATA SELLING

• Free forever through non-intrusive advertising (Google AdMob only)
• No hidden analytics or behavioral profiling by HintLocker
• No monetization through selling your personal data
• Your password hints never transmitted or exposed to advertisers
• Privacy by design, not by policy