EMF Radar vs GPF Bubble Level
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EMF Radar
This app uses your device's sensors to detect and measure electromagnetic fields in real-time. It also provides a map to visualize nearby cellular towers and their coverage, offering insights into your local electromagnetic environment.
- Real-time magnetic field measurements
- Animated gauge display
- Cellular tower map
- Searchable location for tower coverage
- EMF scores for cellular density
- Offline magnetometer readings
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EMF Radar helps you understand the electromagnetic environment around you. EMF Meter Use your iPhone's built-in magnetometer to detect and measure DC magnetic fields in real-time. The intuitive gauge displays field strength in microtesla (μT), making it easy to identify sources of magnetic activity near electronics, appliances, and other objects. Cell Tower Map Search any address to see nearby cellular towers and their coverage. View tower details including network type (5G, LTE, UMTS, GSM, CDMA) and distance from your location. Each area receives an EMF score based on tower density and proximity. Features - Real-time magnetic field measurements with animated gauge - Interactive map with tower markers color-coded by network type - Search any location to check tower coverage - EMF scores to quickly assess cellular infrastructure density - Works offline for magnetometer readings Whether you're curious about the magnetic fields in your home or want to understand cellular coverage in your area, EMF Radar gives you the tools to explore.
GPF Bubble Level
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GPF Bubble Level is a minimal, high-contrast spirit level app for iPhone, built around real-time accelerometer data. It uses Core Motion to read device gravity and translates movement into a smooth on-screen bubble inside a circular level grid. The interface is intentionally clean: black background, white elements, Menlo typography, and a compact layout designed for quick visual alignment in everyday use. Key features: - Real-time level detection using accelerometer/device motion - Smooth bubble movement with light filtering for stability - Tilt angle readout in degrees - Live X/Y gravity values for reference - Dedicated Info screen with app icon, title, and version/build footer - Custom monochrome app icon (white on black) consistent with the app style Design goals: - Fast glanceability - No clutter - Strong visual contrast for indoor/outdoor visibility - Coherent monochrome identity across UI and iconography Technical notes: - SwiftUI-based UI - CoreMotion integration via observable motion manager - Motion privacy usage description configured - Build/version shown directly from bundle metadata This app is ideal for quick leveling checks on surfaces, shelves, frames, and small DIY tasks, with a focused UX that prioritizes readability and responsiveness.
Screenshots
Verdict
EMF Radar and GPF Bubble Level are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | EMF Radar | GPF Bubble Level |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 5 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Justin Tormey | Gian Paolo Fontani |
In-app purchases
EMF Radar
No in-app purchases
GPF Bubble Level
No in-app purchases
Questions
Is EMF Radar free?
Is GPF Bubble Level free?
Do EMF Radar or GPF Bubble Level have ads?
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