# Fesi - Reaction Video Recorder

> The privacy-first reaction video recorder designed to automatically capture genuine human reactions while watching television, movies, sports, creator streams, and gaming sessions.

## Overview
Fesi is a mobile application developed by Ruth Technologies, LLC for iOS and Android. Users place their phone facing them while watching media. Fesi runs continuously in the background using local computer vision and audio signal processing to detect when an authentic reaction occurs (such as laughter, cheering, shouting, or jumpscares). When triggered, it saves an isolated reaction highlight clip including a 2-second pre-roll buffer so the buildup leading up to the moment is never lost.

## Key Capabilities & Features
- **Hands-Free & Automatic Detection**: Combines face expression analysis, body motion baseline shifts, and audio energy spikes. No need to touch or hold the device.
- **Smart 2-Second Pre-Roll**: Maintains a rolling volatile memory buffer to capture the exact seconds preceding the reaction.
- **100% On-Device AI**: Vision and audio pipelines run strictly on device hardware (Apple Vision and Neural Frameworks on iOS; MediaPipe on Android). No video, audio, or metadata is ever transmitted to cloud servers.
- **Zero Wasted Storage**: Discards idle viewing footage in real time. Only saves true reaction moments, preventing gigabytes of dead video files.
- **Biometric Security**: Supports locking the saved reaction library behind Face ID or device passcode.
- **Siri AI & Apple Intelligence Integration**: iOS 18 AppIntents support voice commands like "Hey Siri, start reaction mode in Fesi" and "Hey Siri, stop recording in Fesi".
- **Social Sharing**: High-definition export straight to Photos camera roll, ready for TikTok, Instagram Reels, and YouTube Shorts.

## Platforms & Downloads
- **iOS (iPhone/iPad)**: Available on Apple App Store at https://apps.apple.com/app/fesi/id6813707570 (App Store ID: 6813707570).
- **Android**: Available via direct standalone APK download at https://fesiapp.com/download/fesi.apk.
- **Web**: Official site at https://fesiapp.com.

## Privacy & Compliance
- Accounts Required: None.
- Tracking / SDKs: None.
- Cloud Storage: None. All media remains on the user's physical device.
- Privacy Policy: https://fesiapp.com/privacy.
- Support & Inquiries: https://fesiapp.com/about or support@fesiapp.com.
- Publisher: Ruth Technologies, LLC.