FourScan vs Trace Privacy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FourScan
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Protect your privacy with 4 scanning technologies. Worried about hidden cameras or listening devices in hotels, Airbnbs, or rental spaces? FourScan runs 4 detection scans sequentially with a single tap. [4 Detection Powers] 1. Magnetic Scan - Detects magnetic field anomalies from electronic devices 2. Infrared Scan - Uses front camera to detect IR LEDs from night vision cameras 3. Wi-Fi Scan - Discovers suspicious devices on the local network 4. Bluetooth Scan - Searches and analyzes nearby BLE devices Note: Basic checking tool, not a substitute for professional investigation.
Trace Privacy
This app acts as a personal phone security guardian, detecting Bluetooth trackers and analyzing Wi-Fi networks for threats. It provides personalized recommendations to enhance your phone's security settings and offers a live threat feed for daily alerts.
- Bluetooth tracker detection
- Wi-Fi network analysis
- Live threat feed
- Personalized security recommendations
- Background tracker scanning
- Security score trend tracking
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Trace is your personal phone security guardian. Modern phones face constant threats — sketchy Wi-Fi networks, unknown Bluetooth trackers, and the looming question of who or what is nearby. Trace gives you instant visibility and clear actions, so you can move through the world feeling confident about your privacy. WHAT TRACE DOES - Bluetooth Tracker Detection Detect AirTags, Tile, Chipolo, and Samsung SmartTags around you — identified by brand. Trace's persistence engine watches devices over time and flags ones that keep reappearing as you move, even when they rotate identifiers to evade tracking. Alerts include how many times a device has been seen and whether it's following you across locations. - Wi-Fi Network Analysis + Speed Test Identify spoofed networks, evil-twin attacks, and unencrypted public Wi-Fi before you connect. Free built-in speed test measures download, upload, latency, jitter, and packet loss. Get clear "Safe / Caution / Dangerous" verdicts based on real threat intelligence. - Live Threat Feed Stay informed with curated alerts from CISA, Apple Security, Android Security, FTC scam warnings, data breach alerts from Have I Been Pwned, privacy news from the Electronic Frontier Foundation, and stalkerware research from the Coalition Against Stalkerware. Updated automatically. - Personalized Recommendations Get clear, step-by-step instructions to harden your phone's security settings. From two-factor authentication to lockdown mode, Trace tells you exactly what to do. - Background Tracker Scanning Trace keeps watching for trackers even when the app is closed. Get a notification if something persistent is following you — with brand and pattern details, not just a generic warning. - Trend Tracking Watch your security score evolve over time. See how your habits, environments, and choices affect your privacy posture. WHY TRACE IS DIFFERENT Most security apps either oversell what they do or focus on enterprise customers. Trace focuses on what's actually possible on iOS and gives you clear visibility into the rest. Built by an indie developer who believes privacy is a basic right. PRIVACY FIRST - No tracking, no ads, no data sales - Most data stays on your device - Optional Sign in with Apple for account backup - Your scan history is yours alone PRO SUBSCRIPTION Unlock the full toolkit with a 7-day free trial: - Technical Details mode — see raw protocol data on Bluetooth and Wi-Fi screens, including decoded Apple Continuity broadcasts - Direction finder — physically locate a suspicious tracker with warmer/colder guidance - Persistence tracking — see which devices keep appearing across scans - Smart device labeling and fingerprinting - Unlimited scan history and trend charts - Strict scanning mode for maximum sensitivity After trial: $6.99/month or $39.99/year ($3.33/month). Cancel anytime through your Apple ID settings. QUESTIONS? Email clark.a.allen@pm.me — I read every message. Privacy Policy: https://sponge-text-fc3.notion.site/Privacy-Policy-for-Trace-Privacy-34940d65d5f780d79d0ef8379f93f668 Terms of Service: https://sponge-text-fc3.notion.site/Terms-of-Service-for-Trace-Privacy-34940d65d5f780d5adaacea65f384111
Screenshots
Verdict
The clearest difference is in-app purchases: FourScan at none against Trace Privacy's 2. Trace Privacy's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement 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. Trace Privacy sells 2 in-app purchases, starting at $6.99 per month. FourScan asks for nothing beyond the download.
FourScan ships an update every 5 days, Trace Privacy every 9 days. The most recent releases landed on October 29, 2026 and October 7, 2026 respectively.
| Parameter | FourScan | Trace Privacy |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 3 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | satoshi amasaki | Clark Allen |
In-app purchases
FourScan
No in-app purchases
Trace Privacy
- Pro Monthly7 Days trial$6.991 Month
- Pro Annual7 Days trial$39.991 Year









