SmartCrowd vs RF Detector
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartCrowd
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SmartCrowd is an application developed for a research project. It allows the user to safely enjoy large events such as festivals, live concerts, street parades, etc. SUBSCRIBE TO AN EVENT Using the SmartCrowd app, the user can subscribe to any available event (e.g., Fribourg Campus Fever 2014, Paléo Festival 2015, etc.) and receive information in real time about the event organization (map, scheduling, etc.). STAY SAFE During the event, SmartCrowd uses anonymously the users’ location to detect in real time dangers and hazardous conditions, and to provide aimed information about possible congestions, the nearest emergency exit, fire extinguishers, etc. ENJOY THE FESTIVAL To help the user enjoy the festival, the application provides contextual information about the near stands and shops and their offers. PARTAKE SmartCrowd allows the user to take part in contests and games created by the organizers in order to win gadgets, reductions... and satisfaction! PRIVACY No personal data is collected. An individual cannot be identified by the data collected. Any collected information will be used only for research purposes and under no circumstances will we provide or disclose any collected information from the users. NOTE: Continued use of GPS running in the background can dramatically decrease battery life.
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.
- Smart RF Detector
- Network Scanner
- Real-Time Visualizer
- Haptic & Audio Alerts
- 100% Offline Processing
- Zero Account Required
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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/
Screenshots
Verdict
The clearest difference is update cadence: RF Detector at every 3 days against SmartCrowd's every 3 weeks. SmartCrowd's advantage is iOS requirement (7.0 vs 15.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SmartCrowd ships an update every 3 weeks, RF Detector every 3 days. The most recent releases landed on September 19, 2026 and September 26, 2026 respectively.
| Parameter | SmartCrowd | RF Detector |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 7.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 6 MB | 67 MB |
| Age rating | 4+ | 4+ |
| Developer | HEIA-FR | Daniel Dominguez |
In-app purchases
SmartCrowd
No in-app purchases
RF Detector
No in-app purchases
Questions
Is SmartCrowd free?
Is RF Detector free?
Do SmartCrowd or RF Detector have ads?
Which is updated more often, SmartCrowd or RF Detector?
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