Repurpose your iOS device into an intelligent edge-AI security monitor. Keep a private, silent guard over your home, hotel room, Airbnb, or campsite and get real-time alerts anywhere.
Download on the App StoreWatch our tutorial video to see how to pair your devices and set up your privacy-first home security guardian.
AlertCatcher uses your device's microphone and camera combined with local machine learning models to detect anomalies and keep you informed.
Processed 100% on-device using Apple's SoundAnalysis framework. Instantly classifies footsteps, door locks, breaking glass, crying babies, or alarms.
Leave one device in your room in Guardian Mode. Carry your primary device in Receiver Mode to receive real-time push notifications. Pairs securely using alphanumeric codes with manual device approval required on the Guardian.
Uses low-overhead camera analysis to detect visual movement. On trigger, it captures a 30-second video evidence clip with a 60-second cooldown to save storage.
Request and view a secure, real-time video stream from your Guardian device on-demand. Features a flashing privacy banner on the Guardian and a 1-minute auto-pause safeguard.
Dims the screen to 0% brightness and blacks out the UI. This saves battery and allows the app to operate continuously and discreetly in hotel rooms.
AlertCatcher is trained to classify specific categories of acoustic anomalies in real-time:
Doorbells, locks jiggling, footsteps, doors opening, sliding glass doors, breaking glass.
Smoke/fire alarms, carbon monoxide detectors, human distress calls.
Running water, showers, sinks, and burst pipes.
Baby crying (perfect for portable baby monitoring), loud impacts.
Dog barking/howling, cat meowing. Monitor your pets when away.
Speech, whispering, laughter, coughing, throat clearing, gasping, grunting, groaning, humming, and singing.
We believe bedroom and hotel room monitoring must be private. That's why AlertCatcher processes all sound and motion analysis locally on your device. All recorded intrusion evidence (audio and video clips) is stored strictly on your device's local storage and is never uploaded to any server. For the optional Live Sentry streaming feature, only a single, real-time image frame (approx. 1Hz) is temporarily sent to your secure, encrypted Firebase cloud database to enable remote viewing. This frame is immediately overwritten by the next frame, and is permanently deleted as soon as the stream ends. Your raw media is never processed by, stored on, or shared with third-party servers.
Try all Premium features for FREE for your first 7 days!
| Feature | Free Trial (First 7 Days) | Premium Lifetime ($9.99) |
|---|---|---|
| AI Sound Monitoring & Identification | ✔ | ✔ |
| Guardian to Receiver Pairing | ✔ | ✔ |
| Blackout Mode Power Saver | ✔ | ✔ |
| Real-Time Push Notifications | ✔ | ✔ |
| 30s Audio Evidence Clips | ✔ | ✔ |
| Video Sentry (Sound-Triggered Video) | ✔ | ✔ |
| Motion Sentry (Camera Motion Trigger) | ✔ | ✔ |
| On-Demand Live Camera Stream | ✔ | ✔ |
| History Retention (Audio & Video) | 30 Days | 30 Days |
| Access Status | Full Access (Expires after 7 days) | Unlimited Lifetime Access |