Comparison

RF Detector vs EMF Detector

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RF Detector

This tool helps detect hidden electronic devices and cameras by scanning for electromagnetic fields and network connections. It offers real-time visualizers and alerts, all processed offline without requiring an account or sharing your data.

Highlights
  • Smart RF Detector
  • Network Scanner
  • Real-Time Visualizer
  • Haptic & Audio Alerts
  • 100% Offline Processing
  • Zero Account Required
Features
Read full description

Protect your peace of mind with ReFi. A secure, offline tool to find hidden devices and cameras. Are You Truly Alone? Hidden spy cameras, rogue microphones, and trackers are smaller and easier to hide than ever before. Whether you are in a hotel, an Airbnb, or a sensitive meeting, your privacy matters. Meet ReFi, your essential rf signal detector designed to help you scan your surroundings, locate suspicious electronic emissions, and secure your personal space. Why Choose ReFi? Most security apps require intrusive permissions or upload your data. Not us. Our usp is a privacy first rf detector. We believe a tool built to protect you should never track you. 100% Offline Processing: All scans happen entirely on your device. Zero Account Required: No registration, no emails, no tracking. No Data Sharing: We never collect, sell, or share your metrics. Key Features Smart RF Detector: Detect electromagnetic fields emitted by hidden electronic devices, lenses, and spy bugs. Network Scanner: Identify unauthorized devices connected to local Wi-Fi or Bluetooth networks. Real-Time Visualizer: Easy-to-read signal strength charts spike as you get closer to a threat. Haptic & Audio Alerts: Receive instant sound and vibration feedback to help you sweep a room discreetly. Perfect For: Travelers: Sweep vacation rentals and hotel rooms. Professionals: Secure conference rooms before sensitive discussions. Privacy Enthusiasts: Add an extra layer of daily defense against surveillance. Disclaimer: ReFi uses your phone’s built-in magnetometer and wireless sensors to locate potential threats. While highly effective as a first line of defense, standard smartphones cannot detect all dormant or military-grade signals. Download ReFi today—secure your space and keep your personal life private. Terms(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy:https://nulladevs.com/app-privacy-policy/

About

EMF Detector

Features
Read full description

EMF Detector turns your iPhone's magnetometer into a live magnetic-field instrument, presented as a classic CRT vectorscope. The sensor is sampled at 100 Hz and monitored on two channels at once: steady field shifts from magnets, ferrous objects and motors, and AC ripple from live wiring. Field deviation is drawn as a phosphor beam with a persistence trail, and detected anomalies are marked on the scope and logged automatically with time and strength. VECTORSCOPE — the beam shows the direction and strength of the current disturbance; repeated activity builds a slowly fading heat picture of where it concentrates. ELITE 3D SCANNER — an alternative display in the style of the 1984 classic, showing the field's vertical component on a tilted scanner plane. BENCH-METER READOUTS — fourteen-segment displays for field strength, baseline, deviation and AC ripple, with a FIXED/AUTO baseline lock and one-tap re-baseline. APPLE WATCH — a companion app with its own sensor, alerts and a mini scope. PRO (one-time purchase): • REM-POD MODE — park the phone at a location and monitor it from your wrist: the watch mirrors the scope, meter and anomalies live, with an optional alarm on the parked phone. • WATCH REFERENCE MODE — use the watch as an ambient reference to distinguish local disturbances from room-wide changes. • Map of geotagged anomalies, CSV/GPX export, unlimited history and custom sensitivity. The instrument measures real magnetic fields: readings reflect physical sources such as wiring, appliances and magnetised objects. How you use it is up to you.

Screenshots

RF Detector4 screens
EMF Detector4 screens

Verdict

The call

The clearest difference is in-app purchases: RF Detector at none against EMF Detector's 1. RF Detector also leads on iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. EMF Detector sells 1 one-off in-app purchase. RF Detector asks for nothing beyond the download.

Scorecard2 real differences · 7 level
RF Detector versus EMF Detector: the parameters behind the verdict, then further details
ParameterRF DetectorEMF Detector
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 4 days—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS15.0 — better17.0
Further details — not scored
Size67 MB3 MB
Age rating4+4+
DeveloperDaniel DominguezDavid Elam

In-app purchases

None

RF Detector

No in-app purchases

1 purchases

EMF Detector

One-time1
  • Pro Unlock$5.99

Questions

Is RF Detector free?
RF Detector is free to download, with no in-app purchases.
Is EMF Detector free?
EMF Detector is free to download, with in-app purchases available.
Do RF Detector or EMF Detector have ads?
Neither RF Detector nor EMF Detector shows ads.

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