Fesi automatically detects your reactions while you watch TV, movies, sports and more. No buttons. No missed moments.
Available for iPhone and Android
No fumbling with record buttons while trying to enjoy your content.
Open Fesi or say "Hey Siri, start reaction mode in Fesi". Set your phone down facing you and your screen.
Sit back and enjoy your movie, game, or stream. Fesi quietly tracks emotion and audio baselines locally.
When you jump, scream, or laugh, Fesi captures that exact clip with 2 seconds of buildup before you reacted.
A clean, focused experience that stays out of your way.
Everything you need to catch memories without sacrificing storage or privacy.
The buildup is the best part of any reaction. Fesi continuously buffers the prior 2 seconds so when surprise hits, you catch the setup and the punchline.
Your camera and microphone streams are processed exclusively on your phone hardware. No accounts, no servers, and zero cloud uploads ever.
Hands full of popcorn? Control everything with your voice. Use native Siri phrases to start, stop, or check on your recording sessions.
Forget 40GB videos of you staring quietly at a screen. Fesi discards idle footage and only writes the genuine emotional reactions to disk.
Keep your library private. Fesi lets you secure your saved reaction gallery behind Face ID or Passcode so only you can view your clips.
Export high-definition 1080p clips straight to your Photos camera roll, ready to drop into TikTok, Instagram Reels, YouTube Shorts, or group chats.
Most recording apps route your camera feed through external servers or analytics trackers. Fesi is architected with a strict zero-knowledge model. All vision classification and audio signal fusion happen exclusively in local volatile memory.
Runs hardware-accelerated emotion and motion tracking directly on the A-series and M-series chips without network calls.
Temporary rolling buffers live solely in RAM and are permanently overwritten every 2 seconds unless a genuine reaction triggers.
Saved clips are stored strictly in your sandboxed device filesystem, protected behind biometric authentication.
Download the standalone Android release directly to your device.