Hidden Device Radar vs Holler

Worried someone is watching or following you? Hidden Device Radar helps you find hidden cameras, trackers, and unknown smart devices — right from your iPhone. Whether you're checking a hotel room, a short-term rental, an office, a car, or your own home, Hidden Device Radar gives you a fast, private way to spot devices that may be recording or tracking you. WHAT IT DETECTS • Bluetooth devices — trackers (AirTag, Tile, SmartTag, Chipolo), cameras, speakers, wearables, and other IoT gadgets • Wi-Fi / local network devices — IP cameras, baby monitors, NVRs, doorbells, and smart-home hardware • Unknown trackers that may be traveling with you • NFC tags — tap to identify a chip hidden in an object (on supported iPhones) KEY FEATURES • Real-time threat scoring — every device is flagged as Info, Suspicious, Elevated, or Critical • Signal Strength Finder — a "warmer / colder" proximity graph that helps you physically locate a device (Pro) • Scan modes for a quick sweep, a single room, or a whole floor • Detailed device fingerprints and manufacturer identification • Detection history so you can tell what's new versus what's always there • 100% on-device — your scans never leave your iPhone. No account, no tracking, no ads. HIDDEN DEVICE RADAR PRO Unlock everything with a one-time purchase: • Signal Strength Finder • NFC Tap-to-Identify • Full threat analysis and guidance • Unlimited detection history • AI Trend Insight HONEST ABOUT LIMITATIONS Hidden Device Radar detects devices that broadcast Bluetooth, Wi-Fi, or NFC signals. Bluetooth, Wi-Fi, and NFC advertisements are unauthenticated, so results are strong investigative leads — not legal proof of a device's identity or intent. The app cannot detect devices that are powered off, purely analog/wired, or that broadcast no signal. PRIVACY FIRST Everything runs locally on your device. We don't collect, upload, or sell your data. There are no accounts and no ads. Use Hidden Device Radar to check your own spaces and protect your own privacy. Always follow the laws in your area.

Talk to every room at once. Holler turns your iPhone into a whole-house intercom. Hold a button — or your iPhone’s Action Button — say your piece, and let go. Your voice plays on the Chromecast and Google Nest speakers you choose, anywhere in the house. No wake words. No “Hey Google.” No yelling up the stairs. Just press, talk, done. MADE FOR FAMILIES “Dinner’s ready.” “Time for school.” “Five minutes!” Reach the whole house — or just the kids’ rooms — in one tap. HOW IT WORKS • Finds the Chromecast / Nest speakers on your Wi-Fi • Group them into rooms and floors • Pick a target — a room, a floor, or Everywhere • Hold to talk; your announcement plays a moment later ACTION BUTTON READY Set your iPhone’s Action Button to Holler and broadcast without even opening the app. PRIVATE BY DESIGN Your voice is sent straight to your speakers over your own Wi-Fi. No account, no servers, no analytics — nothing leaves your network. HOLLER PRO (one-time purchase) Unlock unlimited rooms, floors and groups, saved announcements, scheduling, and multiple Action-Button presets. One purchase covers your whole family (Family Sharing). No subscription. Note: Sonos support on iPhone is coming soon. HomePod and AirPlay speakers aren’t supported, because Apple doesn’t provide a way for apps to broadcast to them.