EMF Meter vs StegInsight
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
EMF Meter
Monitor electromagnetic field levels and Bluetooth exposure with real-time readings and safety zone indicators. Understand signal strength and exposure levels around you for awareness at home, work, or while traveling.
- Real-time EMF readings
- Bluetooth device scanning
- Signal strength in dBm
- Safety zone indicators
- Visual EMF analytics
- Dark and light themes
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EMF Meter helps you monitor electromagnetic field levels and Bluetooth exposure from one simple dashboard. Use your iPhoneβs magnetometer to track EMF changes in real time, then scan nearby Bluetooth devices to understand signal strength and exposure levels around you. Track your environment at home, work, or while traveling with clear meters, safety zones, and simple exposure insights. Key Features: Real-Time EMF Meter Live electromagnetic field readings in microteslas (ΞΌT) Uses your device magnetometer Auto-calibration for local magnetic baseline Total EMF safety meter with clear status levels Bluetooth EMF Exposure Scan nearby Bluetooth devices View Bluetooth signal strength in dBm See Bluetooth exposure percentage Safety levels: SAFE, CAUTION, UNSAFE Detailed nearby device list Safety Levels SAFE: Low exposure CAUTION: Noticeable exposure UNSAFE: Strong exposure DANGER: Very high EMF levels for magnetic field readings Visual EMF Analytics Glowing animated safety background Radial meter with color-coded zones Lowest, average, and highest session readings Simple exposure tables Clean dark and light themes Perfect For: Monitoring EMF levels at home Checking workspaces and desks Comparing rooms and nearby electronics Reviewing nearby Bluetooth signal exposure Health-conscious users who want simple EMF awareness How It Works: EMF Meter uses your iPhoneβs built-in magnetometer to measure electromagnetic field variation around your device. For Bluetooth, the app scans nearby wireless sources and estimates exposure from signal strength. Privacy: All readings are processed on your device. No ads, no subscriptions, and no unnecessary tracking. Note: Phone sensors are useful for awareness and comparison, but they are not a replacement for certified scientific or medical equipment. For professional safety testing, use calibrated instruments and consult qualified experts.
StegInsight
Analyze images for hidden text using steganography techniques. Embed or extract messages within image pixels or appended data. Visualize image layers and learn about steganographic concepts.
- LSB Steganography (embed/extract text)
- LSB Bit-Plane Visualization
- Trailing Data Detection (EOF)
- Dual Embedding Modes (LSB/EOF)
- Cross-Platform (iOS, macOS)
- Built-in Steganography Guide
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Discover what lies beneath the surface of your digital images. StegInsight is a multi-platform tool for privacy enthusiasts and security-minded users to analyze and use steganography: hide or reveal text inside images. Key Features β’ LSB Steganography β Embed or extract hidden text using Least Significant Bit (LSB) encoding in pixel data. Supports UTF-8 text with a clear, consistent protocol. β’ LSB Bit-Plane Visualization β View the LSB layer of the red, green, and blue channels as grayscale images. Random noise suggests a normal image; regular patterns may indicate hidden LSB data. β’ Trailing Data Detection β Scan for data appended after the end of image files (EOF). See byte count, hex preview, and decoded text when the trailing data is valid UTF-8. Supports JPEG and PNG. β’ Dual Embedding Modes β Hide text in pixel LSBs or append it after the fileβs logical end (EOF) for JPEG/PNG. Export results as PNG or save back to the photo library (iOS) or file. β’ Cross-Platform β Same core engine on iPhone, iPad, and Mac with a single, clean interface. β’ Learn β Built-in short guide to steganography, LSB and EOF concepts, and how to spot hidden content. Whether youβre learning how steganography works or checking whether an image carries hidden data, StegInsight gives you the tools to look under the surface.
Screenshots
Verdict
The clearest difference is update cadence: StegInsight at weekly against EMF Meter's every 2 months. EMF Meter's advantage is price ($0.99 vs $2.99) and iOS requirement (13.0 vs 16.6). On ads, in-app purchases, monetization model and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
EMF Meter costs $0.99 and StegInsight $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
EMF Meter ships an update every 2 months, StegInsight weekly. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.
| Parameter | EMF Meter | StegInsight |
|---|---|---|
| Price | $0.99 β better | $2.99 |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Every 2 months | Weekly β better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 β better | 16.6 |
| Further details β not scored | ||
| Size | 58 MB | 1 MB |
| Age rating | 4+ | 9+ |
| Developer | PPLST Tech | Hangzhou Lake Snow Technology Co., Ltd. |
In-app purchases
EMF Meter
No in-app purchases
StegInsight
No in-app purchases









