Your phone holds your entire life. Every app. Every conversation. Every contact. Every call you ever made. Thousands of security tools protect you from threats on the internet — encrypted messages, VPNs, password managers. None of them protect you from the person sitting across from you.
The moment someone else holds your phone, every app is visible. Every privacy tool fails at the same point: one PIN screen, one overlay, one gate. When that gate fails — through coercion, through a moment of inattention, through someone watching you type — everything behind it is exposed instantly.
Blink was built for the threat that happens in person.
Blink silently monitors your protected apps. When anyone tries to open one, the phone returns to the home screen instantly. No lock screen. No PIN prompt. No visible indicator that anything happened. From the outside, the phone behaves normally — the app simply does not open.
Sessions start with a secret trigger you configure during setup. Nothing appears on screen. No app opens. No indicator. Blink does not look like a privacy tool. It appears as a system utility — Device Manager, System Tools, Cloud Sync — any of 20+ identities you choose.
SOS mode activates with an alternate trigger. The phone looks exactly like a normal unlocked session. You appear to be cooperating fully. Every protected app remains hidden. The person watching sees nothing unusual.
With a one-time device setup, Blink goes further. Protected apps are removed from the operating system entirely — not locked, not hidden behind a gate, but absent. They do not appear in the launcher, in search, in recents, or in settings. As far as the phone is concerned, the app does not exist. Unlock Blink and it comes straight back.
FREE FEATURES — NO TIME LIMIT:
App protection — silently block protected apps from opening
Screen escape — no trace left in recents or lock screen
SOS mode — duress protection indistinguishable from normal use
Secret trigger — no visible activation
20+ disguise identities — icon and name customization
Banking mode — compatible with financial apps
Notification silence for protected apps
PREMIUM FEATURES:
App Vault — apps hidden from the OS entirely
Notification replacement with 150+ disguise profiles
Hidden contacts — encrypted sandbox, not filtered Android contacts
Call scrubber — automatic call log cleanup
Hidden call with GPS — silent emergency connection
Encrypted Google Drive backup
Shake-to-lock, inactivity auto-lock, session timeout
Paranoia mode
BUILT WITH NOTHING TO HIDE:
No account required. No login. No registration.
No analytics. No usage data. No advertising SDKs.
Zero data collected, transmitted, or stored.
Under 10 MB installed. Zero background data usage.
Published by Factor IO. No investors. No acquisition pressure.
Free tier. No time limit. No account required.

Accessibility Service Disclosure

Blink uses the Android AccessibilityService API to power its core access-control features. When you enable Advanced Mode, the service:

- Detects app launches so Blink can show its lock screen before a protected app's content is visible, and dismiss it from recents.
- Scans on-screen text for keywords you choose, in apps you select (Content-Aware Protection). You configure the rules and target apps; only those rules are evaluated. Keyboards (Gboard, Samsung Keyboard, SwiftKey) are excluded.
- Performs the lockdown action (return-home and clear-recents) so a locked app cannot be reopened from recents.

Blink does not record audio, capture keystrokes, read passwords, or transmit screen content off the device. All keyword matching runs locally; nothing about what you view leaves the device. You can disable Advanced Mode and revoke accessibility permission anytime in Android Settings → Accessibility.