Available on iPhone · iOS 16+
Detectra
Find Hidden Cameras & Devices. Three powerful detection modes — lens scanning, EMF analysis, and acoustic monitoring — built directly into your iPhone.
Find Hidden Cameras & Devices. Three powerful detection modes — lens scanning, EMF analysis, and acoustic monitoring — built directly into your iPhone.
Point your camera around the room. Use precision color filters to visually identify reflective lens surfaces invisible to the naked eye. Different filter modes reveal different types of lenses — helping you spot hidden cameras in rental apartments, hotel rooms, changing rooms, and offices. Capture and save snapshots with the active filter applied.
Every electronic device emits a magnetic field. Detectra reads your iPhone's built-in magnetometer in real time and displays it on a precision analog gauge. When the field strength rises beyond the baseline, the signal tone accelerates — giving you instant, intuitive feedback as you sweep the room. Auto-calibration adjusts to your environment so you focus only on anomalies that matter.
Detectra analyzes the acoustic spectrum through your microphone to detect unusual high-frequency signals that may indicate active wireless transmission. A live circular spectrum display shows signal intensity in real time, with peak frequency tracking and a clear status indicator showing whether a suspicious signal is present.
Every saved detection record includes timestamp, detection type, GPS coordinates, reverse-geocoded address, and a map preview with location marker. For lens scans — the captured photo. Tap any record to view full details, copy any field, open the location in Apple Maps, or share the full record in one tap.
About
Designed for travelers, privacy-conscious individuals, and anyone who values personal security — Detectra scans your environment using three powerful detection modes built directly into your iPhone.
Start and stop scanning with a single tap. Mute signal tones when discretion is needed. Works fully offline. No distractions, no complexity.
Three detection modes, one app
Use advanced filter modes to visually identify reflective lens surfaces that are invisible to the naked eye. Different filters reveal different lens types.
Manually sweep the room and spot hidden cameras in rental apartments, hotel rooms, changing rooms, and offices using live filtered camera view.
Real-time magnetometer readings on a precision analog gauge. Accelerating tone signals anomalies — just like a Geiger counter — for instant intuitive feedback.
Automatic baseline calibration filters out ambient magnetic noise, so you only see anomalies that are genuinely suspicious and above the background level.
Monitors the 10–18 kHz acoustic range where many wireless transmitters operate. Live peak frequency display shows exactly what the microphone is picking up.
Circular real-time spectrum visualization shows acoustic signal intensity across frequency bands, with clear status indicating whether a suspicious signal is detected.
Every detection record is saved with GPS coordinates and reverse-geocoded street address — so you always know exactly where and when each anomaly was found.
Each record includes a static map snapshot with a location marker. Tap to open in Apple Maps, or share the full record including map link in one tap.
Capture snapshots from the lens detector with the active color filter applied. Photos are stored alongside EMF and acoustic readings at the moment of capture.
Mute signal tones with a single tap whenever discretion is needed. All sensors continue working silently in the background.
Detectra works entirely on-device without any internet connection. All detection, saving, and history browsing is available completely offline.
Start and stop any detection mode with a single tap. Clean, minimal interface designed to stay out of your way while you focus on what matters.
Detectra does not claim to replace professional RF sweeping equipment. It uses the sensors built into your iPhone to help you notice what might otherwise go undetected. Your space. Your privacy. Stay aware.