Attenuator vs EMF Detector
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Attenuator
Calculate output voltage, power, and attenuation based on input values and dB of attenuation. Features NMR-specific calculations for pulses and measures local magnetic fields and barometric pressure.
- Calculate output voltage and power
- Specify input voltage (Vpp or Vrms)
- Calculate attenuation in dB
- NMR pulse calculations
- Measure local magnetic field
- Display barometric pressure
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Attenuator is a utility for anyone working with radio frequency sources and needs to know power and voltage after attenuation. You can specify an input voltage (Vpp or Vrms) and dB of attenuation to get the output voltage, power and attenuation. The impedance can be specified, typically 50Ω for most systems. There is a new emphasis on NMR utility, with options for calculating pulses based on reference power and pulse length. Powers are in Watts, dBm, and dB values. Measure local magnetic field to check stray static fields from magnets. See the local barometric pressure, useful if the magnet boil-off is high
EMF Detector
Transform your iPhone into an EMF detector to monitor electromagnetic fields. Identify radiation levels in various environments to assess safety at home, work, or in public spaces. Gain insights to make informed decisions about your surroundings.
- EMF monitoring
- Electromagnetic field detection
- Radiation level measurement
- Environmental safety assessment
- Real-time EMF readings
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Monitor your surroundings with precision using our EMF Monitoring app, designed exclusively for iOS. This innovative application transforms your iPhone into a powerful EMF detector, enabling you to identify electromagnetic fields in various environments. As you move through different areas, the app continuously measures EMF levels, allowing you to easily pinpoint zones of high and low radiation. Whether you're concerned about safety at home, in the workplace, or in public areas, EMF Monitoring provides the insights you need to assess environmental safety and make informed decisions about your surroundings. This app is using the standard Apple Terms of Use (EULA) https://www.apple.com/legal/ internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Attenuator at 100% against EMF Detector's 25%. Attenuator also leads on rating (5.0 vs 4.3). EMF Detector's advantage is update cadence (every 2 weeks vs every 7 months) and ratings volume (319 vs 8). On price, ads, in-app purchases and monetization model 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. Attenuator sells 1 one-off in-app purchase and EMF Detector sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Attenuator holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: EMF Detector has 319 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 100% of Attenuator's written reviews are positive against 25% of EMF Detector's.
Attenuator ships an update every 7 months, EMF Detector every 2 weeks. The most recent releases landed on September 14, 2026 and September 21, 2026 respectively.
| Parameter | Attenuator | EMF Detector |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | 4.3 (319 ratings) |
| Positive reviews | 100.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 8 | 319 — better |
| Update frequency | Every 7 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Tim E. Burrow | 新雨 李 |
Customer experience
Attenuator
EMF Detector
In-app purchases
Attenuator
- Remove all ads$1.99
EMF Detector
- unlimited features2 variants$4.991 Month
- unlimited features$14.99
Questions
Is Attenuator free?
Is EMF Detector free?
Which has better reviews, Attenuator or EMF Detector?
Do Attenuator or EMF Detector have ads?
Which is updated more often, Attenuator or EMF Detector?
Other comparisons
