Keen: Deepfake Detector

madroid apps

About this app

Can you trust what you see?

Deepfakes and AI-generated images have reached a quality where human eyes can no longer reliably tell the difference. Keen is your on-device sovereign shield — a real-time detector that analyzes any screen or image using 9 independent AI signals, 100% offline, with zero data ever leaving your device.

─── HOW IT WORKS ───

▸ SCREEN SCAN — Tap the floating eye icon on any screen. Keen captures frames via Android's API, runs multi-signal analysis, and delivers a verdict in seconds. Drag the icon anywhere. Drag to the bottom to dismiss.

▸ IMAGE ANALYSIS — Share any image directly to Keen from your gallery, browser, or any app. Keen runs a 5-crop ensemble analysis and returns a detailed breakdown.

▸ VERDICTS — ORGANIC (real), AI GENERATED (fake), LEANS AI, LEANS ORGANIC, or UNCLEAR with directional context so you always know what the signal means.

─── 9-SIGNAL DETECTION ENGINE ───

Keen doesn't rely on a single model. It fuses 9 independent signals:

Deep Scan mode adds: rPPG heartbeat detection, texture optical flow, and blink rate analysis.

─── SOVEREIGN PRIVACY ───

Keen has NO internet permission. It is physically incapable of sending data anywhere.

✓ Zero network access — enforced at the manifest level
✓ No account, no login, no sign-up
✓ No analytics, no crash reporting, no telemetry
✓ Scan history stored in AES-256-GCM encrypted local storage
✓ All inference runs on-device using ONNX Runtime for Android

Your scans are yours. Always.

─── PERMISSIONS EXPLAINED ───

• Display over other apps — required for the floating overlay (you control when it's visible)
• Screen capture — only active when you tap to scan; you approve each session
• Biometric — optional, used only to unlock your encrypted scan history

─── SENSITIVITY CONTROLS ───

Choose your scan depth:
• QUICK (8 frames) — fast check for obvious fakes
• STANDARD (16 frames) — balanced speed and accuracy
• DEEP (32 frames) — maximum confidence, includes video-only signals

─── DESIGNED FOR CLARITY ───

The Sovereign HUD delivers results in a military-grade dark interface. No distracting UI. No subscription prompts. Just a clear verdict with confidence score and signal breakdown.

─── WHO IS KEEN FOR? ───

✓ Anyone who shares or receives images/videos on social media
✓ Journalists verifying source material
✓ Professionals reviewing media for authenticity
✓ Privacy-conscious users who refuse cloud-based tools
✓ Anyone who wants to stay ahead of the synthetic media wave

─── FREQUENTLY ASKED ───

Q: Does Keen require an internet connection?
A: Never. All AI runs locally. The app has no internet permission.

Q: Does Keen store my images?
A: No. Frames are processed in memory and immediately discarded. Only the last scanned item is showing in the app.

Q: How accurate is it?
A: The primary model achieves 92% accuracy on a balanced 56,000-sample dataset. Real-world accuracy varies with image quality and compression.

Q: Does it work on videos?
A: Keen analyzes individual frames. Use Deep Scan mode for video content to capture multiple frames over time.

Truth is a right. Keep it sovereign.

What’s new

## What's New (v1.0 — Initial Release)

First public release of Keen: Sovereign Shield.

• Real-time deepfake detection via floating overlay
• 9-signal detection engine (ONNX ViT + FFT + Face Mesh + more)
• Image analysis via share sheet
• Quick / Standard / Deep scan modes
• Encrypted local scan history
• Zero internet. Zero tracking. Zero compromise.