AlertCatcher - Smart Guardian

Secure your room with offline edge-AI. Turn your device into an automated sound and motion sentry with real-time pairing and encrypted remote alerts. No account required.

Repurpose your iOS device into an intelligent, 100% private security monitor. Keep a silent, edge-AI guard over your home, hotel room, Airbnb, or office, and receive instant remote alerts anywhere.

AlertCatcher uses a secure dual-device architecture to protect your space without sacrificing personal privacy:

1. The GUARDIAN device stays in the room, actively listening for acoustic anomalies and monitoring motion.
2. The RECEIVER device stays with you, receiving instant push alerts and displaying real-time updates.

HOW IT WORKS:

1. Choose Roles: Set your monitor device to Guardian Mode and your carry-along phone to Receiver Mode.
2. Pair Securely: Pair devices instantly using an anonymous Link Code. No email signups or accounts required. Tap "Approve Link" on your Guardian to authorize.
3. Arm & Monitor: Toggle Sound or Motion inputs, tap Start, then tap the Moon icon to enter Blackout Mode. You are now protected!

KEY FEATURES: • Edge-AI Sound Classifier: Processes audio 100% locally. Listens for glass breaking, door knocks, alarms, speech, baby crying, or human distress. • Motion Sentry: Analyzes camera feeds locally to detect movement. Automatically saves a 30-second local video clip and alerts the Receiver. • On-Demand Live Camera: Remotely view a secure 1Hz live feed of your room from your Receiver device. A flashing banner displays on the Guardian screen for privacy transparency. • Remote Arm, Disarm & Siren: Toggle the Guardian's state remotely or trigger a loud deterrent siren from your Receiver device. • Discreet Blackout Mode: Dims the Guardian screen to 0% brightness to keep the app active in the foreground while preventing screen burn-in and keeping the room dark. • Evidence Library & Timeline: Browse history with a visual 24h timeline. Tap any icon to play the closest local audio/video clip. Swipe to delete or share. • Interruption Recovery: Automatically pauses and resumes monitoring when phone calls or system alerts interrupt device audio hardware.

ABSOLUTE PRIVACY PROMISE • 100% On-Device Processing: All acoustic classification and motion analysis are processed offline on your hardware. • Offline Evidence Storage: Recorded audio/video evidence clips are stored strictly in the Guardian's secure local sandbox and are never uploaded to any server. • Transient Live Streaming: The optional Live Sentry streaming feature uploads only a single frame at a time (approx. 1Hz) to your secure Firebase database. This frame is immediately overwritten and permanently deleted when the stream ends. • Zero Data Sharing: No raw media is ever shared, sold, or sent to third-party servers.

LICENSE & 7-DAY FREE TRIAL Experience the power of AlertCatcher with a fully featured 7-day free trial: • 7-Day Free Trial: Unrestricted, full access to all features (Sound, Motion, Video Sentry, Live Streaming, Remote controls, and History) for your first 7 days. • Lifetime Premium Upgrade (One-Time Purchase): Required to continue using the app after the 7-day trial expires. Unlocks permanent, unlimited access with no recurring subscription fees.

Disclaimer: AlertCatcher is a portable security utility. It is not a replacement for professional home security systems or designated life-safety fire/smoke detectors. Please use responsibly and in accordance with local regulations.