EMF Detector vs SpireMonitor
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
EMF Detector
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EMF Wave Detector transforms your smartphone into a powerful electromagnetic field detector. Using your device's built-in magnetometer, it measures magnetic fields in real-time with professional-grade accuracy. FEATURES: โข Real-time EMF measurement in ยตT or mG โข Visual gauge with color-coded danger levels โข Historical graph tracking over time โข Sound & vibration alerts when thresholds are exceeded โข Dark and light theme support โข Works offline - no internet required PREMIUM FEATURES: โข Remove all ads โข Custom alert thresholds โข CSV data export โข EMF Heatmap visualization Perfect for: - Home inspections & electrical safety - Paranormal investigations - Electronic device testing - Educational purposes - Curiosity about your electromagnetic environment The app uses only your phone's magnetometer sensor - no additional hardware needed. Accurate, fast, and easy to use. Terms of Use: https://astra-dev.fr/apps/emf-detector/terms-of-use.html Privacy Policy: https://astra-dev.fr/apps/emf-detector/privacy-policy.html
SpireMonitor
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SpireMonitor is the developer tool you've been missing on iOS โ a full-featured API client and uptime monitor built for engineers who need visibility on the go. BUILD & ORGANIZE Create collections of HTTP requests with custom headers, body payloads, authentication, and query parameters. Organize them by project, environment, or team โ everything stays structured and accessible. RUN ON DEMAND Fire any request instantly and inspect the full response: status code, headers, body, and latency. Debug APIs, test endpoints, and validate changes without being chained to your desk. AUTOMATE WITH MONITORS Schedule any request to run at a defined interval. SpireMonitor checks your endpoints automatically and alerts you the moment a response fails, times out, or returns an unexpected status โ before your users notice. CLOUD SYNC Your collections and monitors sync seamlessly via your account, so your work is always up to date across sessions. Nothing gets lost. SPIREMONITOR PRO Unlock unlimited monitors, advanced scheduling intervals, and priority alerting with a Pro subscription. Built for developers who depend on their APIs staying healthy. SpireMonitor is built by developers, for developers โ a focused, no-bloat tool that brings serious API monitoring capability to the palm of your hand. Privacy Policy: https://spiremonitor.app/privacy.html Terms of Use: https://spiremonitor.app/terms.html
Screenshots
Verdict
The clearest difference is ads: SpireMonitor at none against EMF Detector's shown. SpireMonitor also leads on update cadence (every 2 days vs every 10 days). EMF Detector's advantage is iOS requirement (15.1 vs 17.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. EMF Detector sells 3 in-app purchases, starting at $2.99 per month and SpireMonitor sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
EMF Detector ships an update every 10 days, SpireMonitor every 2 days. Both last shipped on October 25, 2026.
| Parameter | EMF Detector | SpireMonitor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days | Every 2 days โ better |
| Ads | Yes | No โ better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 15.1 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 56 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Singabe Djonouma | Riyad Anabtawi |
In-app purchases
EMF Detector
- Monthly Premium$2.991 Month
- Yearly Premium$19.991 Year
- Lifetime Premium$39.99
SpireMonitor
- Spire Pro Monthly$4.991 Month
- Spire Pro Yearly$39.991 Year
Questions
Is EMF Detector free?
Is SpireMonitor free?
Do EMF Detector or SpireMonitor have ads?
Which is updated more often, EMF Detector or SpireMonitor?
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