Periphery vs AlertCatcher

Professional Bluetooth LE scanner and debugger for iOS. Periphery gives developers, engineers, and power users a complete toolkit for inspecting Bluetooth Low Energy devices. Scan nearby devices, read GATT services and characteristics, write values, and subscribe to notifications — all in one elegant app. FEATURES - Scan and discover nearby BLE devices in real time - Full GATT inspector: browse services, characteristics, and descriptors - Read, write, and subscribe to BLE characteristics - Automatic UUID identification for known devices - Device fingerprinting: identify chips from Nordic, ESP32, Xiaomi, Shelly - Offline UUID database — no internet required - Dark interface optimized for hardware labs - Find lost Bluetooth devices, tags, and trackers by signal strength (RSSI) with a live proximity meter, a signal graph and an optional beep that speeds up as you get closer - Give devices your own names: they keep them next time and are listed first - Filter the list by minimum signal or hide devices that advertise no name PRO FEATURES Unlock with Periphery Pro: - Unlimited scanning, with no session limit - Session logging: every read, write and notification saved - Unlimited saved sessions, exportable as plain text - No ads, ever FREE VERSION Free to download. The first 3 scan sessions are free, with ads. Unlimited scanning, session logs and no ads need Periphery Pro (subscription or lifetime purchase). BUILT FOR - iOS and embedded developers - IoT engineers and hobbyists - Hardware prototypers - QA engineers testing BLE products - Anyone debugging Bluetooth connectivity - Anyone hunting a lost Bluetooth tag, tracker, or pair of earbuds COMMON QUESTIONS Does it work without an account or internet? Yes to both. Everything happens over Bluetooth on the device. What can it actually see? Any Bluetooth Low Energy device advertising nearby: name, address, RSSI, advertisement data, then the full GATT tree — services, characteristics, descriptors — with read, write and notify. Can it find my lost earbuds or a tracker? It can tell you whether they are advertising and how strong the signal is, which gets you warmer or colder as you walk. It cannot show a map or a direction: BLE gives signal strength, not bearing. Does it work with classic Bluetooth devices? No. iOS only exposes Bluetooth Low Energy to apps. Car kits and older audio devices that use classic Bluetooth are invisible to any app on the App Store. Why does the address change every few minutes? That is iOS, not the app. Apple rotates the identifier it shows you for privacy, so the same device can appear under different addresses. Does it work on iPad? Yes. Terms of Use: https://masaapps360.com/periphery/terms/ Privacy Policy: https://masaapps360.com/periphery/privacy/

Repurpose your iPad, iPhone into an intelligent, 100% private, portable 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. . Enjoy flexible multi-device monitoring: control and track multiple Guardians from a single Receiver, or link multiple Receivers to a single Guardian for shared family alerts. 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.