Comparison

JDoe vs EMF Radiation Detector Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

JDoe

This platform provides a secure and anonymous space for survivors to report experiences of sexual misconduct. It uses military-grade encryption to protect user data and aims to connect victims with lawyers to pursue legal action and identify repeat offenders.

Highlights
  • Encrypted anonymous reporting
  • Time-stamped reports
  • Repeat offender identification
  • Connect with lawyers
  • AI for offender identification
  • Secure data ownership
Read full description

As seen in The New York Times, The Washington Post, The Daily Beast, The Wall Street Journal, Fortune, on NBC Nightly News and more! JDoe is a cutting-edge (patent pending) platform built for and by survivors. We want to thank you, not only for taking the time to look us up, but for joining us in the fight to be heard. We want you to know that we believe you, and we believe in building a space that is safe for you to report your experience, regardless of whether you choose to share it or not. It’s been a long road, but we are so excited to share that JDoe is now available for free on mobile devices worldwide! If you are a fan of our work, please consider leaving us a positive review in the App Store and following us on Instagram @JDoeJustice to stay up to date on all of the exciting work we are doing. - Sexual misconduct remains an extremely underreported but prevalent issue for women and men across the globe. Fear of retaliation, victim blaming, and a disappointing lack of justice for victims continue to be key factors that prevent victims from feeling safe enough to report. JDoe is a platform that aims to give victims a space. We are an encrypted and anonymous reporting platform that links victims of mutual offenders with lawyers. In doing so, JDoe encourages the pursuit of legal action and catalyzes legal success. #TogetherWeAreLoud JDoe is actively adding lawyers to our platform. If you already have legal counsel we warmly welcome introductions if you think they would be a good fit for our platform. Please email ryan@jdoe.io Whether you do or do not have legal counsel we encourage everyone to consider filing a report on JDoe. We are quietly developing an AI for survivors that will exponentially increase our ability to rapidly identify repeat offenders. Each report is protected by military-grade encryption which guarantees the ownership and control over data to each individual survivor. Every survivor has a voice, and together with JDoe we can effectively transform collective whispers into ironclad legal strategy and practical strength in numbers. - FEATURES - FILE REPORT — File an encrypted, time-stamped and anonymous report of sexual violence that was experienced or witnessed. Whether it happened today or 70 years ago in the past, we encourage all folks to consider filing a report with JDoe. Each report strengthens our algorithm’s ability to identify repeat offenders swiftly and to hold them accountable in the form of civil litigation. - REPEAT OFFENDER NOTIFICATIONS — Every report is owned and controlled by each individual user on our system. We have invented a way to preserve ownership and anonymity while being able to capture relations in data such as repeat offenders. When your perpetrator is identified as a repeat offender we will alert you and connected parties. If you are interested in pursuing action JDoe can discreetly and conveniently connect survivors to pursue justice together. - LAW FIRMS — We teamed up with some of the best and most feared law firms in the world to ruthlessly represent survivors. Whether an incident involved your former employer/colleagues, a teacher, a family member, a priest, a stranger, and more. We believe all survivors and when we are successful are able to generate a tremendous amount of emotional as well as practical strength for survivors. - Please follow us on social media @JDoeJustice and help us to spread the word! Every conversation is incredibly important and appreciated. By increasing reporting rates we can effectively identify repeat offenders 70% faster than anyone. #TogetherWeAreLoud

About

EMF Radiation Detector Reader

Detect electromagnetic fields (EMF) around you using your phone's sensors. Identify high-radiation zones in your home and workplace to better organize your environment and potentially improve well-being. Measure EMF emitted by various electronic devices and appliances.

Highlights
  • Detect EMF radiation
  • Measure EMF levels
  • Identify risk zones
  • Organize living space
  • Measure appliance emissions
  • No expensive equipment needed
Features
Read full description

> Detect Invisible Fields: Find the ElectroMagnetic Fields around you in seconds > Pro-Grade Precision: High-accuracy Magnetic Field Analyzer & Gauss Meter with Advanced Signal Stabilization. > Record, Analyze & Export: track trends with interactive data charts and save detailed logs for professional analysis. Check out the areas where you work (desk, meeting rooms), where you sleep (bed), where you relax (couch, living room) and find the levels of EMF you are exposed to. Also use the app to measure the fields emitted by your appliances (computer, fridge, speaker, phone...). PROFESSIONAL MAGNETIC FIELD ANALYZER & GAUSS METER: Discover the invisible magnetic world around you. Using your device’s internal magnetometer, the app provides a comprehensive look at the electromagnetic fields (ELF) generated by electronic devices, wiring, and ferromagnetic materials. NEW PROFESSIONAL FEATURES: - 3-Axis Vector Analysis: Real-time $x, y,$ and $z$ coordinate tracking for precise field directionality. - Interactive History Graphs: Visualize time evolution with high-resolution charts that track spikes and trends. - Clean Signal Mode (LPF): Toggle an advanced Low-Pass Filter to stabilize readings and remove sensor jitter for professional-grade clarity - Save & Export Logs: Record your sessions and export data for further analysis in external software. VERSATILE USE CASES: Electronics Inspection: Measure the magnetic footprint of computers, speakers, and home appliances. Metal Detection: Locate ferromagnetic objects like iron pipes or steel studs behind walls. Interference Calibration: Find the "quietest" zones for sensitive electronic equipment or audio setups. USER EXPECTATIONS & DISCLOSURE: This app is designed as a sophisticated utility for detecting Magnetic Fields (ELF). What it detects: Magnetic flux from magnets, ferrous metals, and the low-frequency electromagnetic fields emitted by electronic components, power supplies, and speakers. What it does NOT detect: This app is not a radio frequency (RF) scanner. It cannot detect Wi-Fi signals, Bluetooth, 5G cellular radiation, or microwave leakage. DISCLAIMER: - This app is intended for educational and utility purposes. It is not a substitute for certified industrial or scientific equipment. It does not provide medical advice or guarantee "safe zones" in a clinical sense. This app does not guarantee exact measures as other fields can interfere with the compass inside your phone, which is used to detect the fields. SUBSCRIPTIONS: - Length: weekly, yearly - Your payment will be charged at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - To Manage or Cancel your subscription, it can be done via the Settings app of your device. For more detail, see https://support.apple.com/en-us/118428 . - To Manage or Cancel your subscription, it can also be done directly from the app: Go to ‘Settings’ screen inside our app, tap on ‘Manage Subscriptions’ and the app will directly open the list of your Subscriptions with the AppStore. You can select a subscription and check available plans or cancel subscription. - When canceling a subscription, your subscription will remain active until the end of the period. Auto-renewal will be disabled but the current subscription will not be refunded. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Read our Privacy Policy at: https://roundingsquares.com/privacy/ Read our Terms of Use at: https://roundingsquares.com/terms/

Screenshots

JDoe4 screens
EMF Radiation Detector Reader3 screens

Verdict

The call

The clearest difference is in-app purchases: JDoe at none against EMF Radiation Detector Reader's 2. JDoe also leads on ads (none vs shown) and update cadence (fortnightly vs every 7 months). EMF Radiation Detector Reader's advantage is ratings volume (4.7K vs 128). On price, rating, review sentiment and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. EMF Radiation Detector Reader sells 2 in-app purchases, starting at $1.99 per 7 days. JDoe asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for JDoe against 4.5 for EMF Radiation Detector Reader. That said, the two scores are not equally well evidenced: EMF Radiation Detector Reader has 4.7K ratings behind it against 128, so its average is the more settled of the two. Written reviews are what separate them: 50% of JDoe's written reviews are positive against 53% of EMF Radiation Detector Reader's.

UpkeepUpdate frequency

JDoe ships an update fortnightly, EMF Radiation Detector Reader every 7 months. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 4 level
JDoe versus EMF Radiation Detector Reader: the parameters behind the verdict, then further details
ParameterJDoeEMF Radiation Detector Reader
PriceFreeFree
Rating4.6 (128 ratings) — better4.5 (4.7K ratings)
Positive reviews50.0% of reviews53.4% of reviews — better
Number of ratings1284.7K — better
Update frequencyFortnightly — betterEvery 7 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.0 — better15.6
Further details — not scored
Size26 MB20 MB
Age rating12+4+
DeveloperJDOE, PBCRounding Squares BV

Customer experience

JDoe

All ratings128 ratings
Positive89.8%
Neutral0.8%
Negative9.4%
Written reviews18 reviews
Positive50.0%
Neutral11.1%
Negative38.9%

EMF Radiation Detector Reader

All ratings4,738 ratings
Positive87.4%
Neutral4.8%
Negative7.8%
Written reviews378 reviews
Positive53.4%
Neutral8.7%
Negative37.8%

Bugs and requests

JDoe

Not enough reviews yet to summarise bugs or requests.

EMF Radiation Detector Reader

Reported bugs

2 issues
  • Readings inconsistent or inaccurate
  • Doesn't work as expected, only detects magnets

Requested features

3 requests
  • Add sound or vibration alerts for high EMF
  • Provide more information on EMF levels and safety
  • Improve layout to avoid ads covering readings

In-app purchases

None

JDoe

No in-app purchases

2 purchases

EMF Radiation Detector Reader

Subscriptions2
  • EMF Radiation Detector Premium Week3 Days trial$1.997 Days
  • EMF Radiation Detector Premium Year$9.991 Year

Questions

Is JDoe free?
JDoe is free to download, with no in-app purchases.
Is EMF Radiation Detector Reader free?
EMF Radiation Detector Reader is free to download, with in-app purchases available.
Which has better reviews, JDoe or EMF Radiation Detector Reader?
JDoe is rated higher. JDoe averages 4.6 out of 5 from 128 ratings, while EMF Radiation Detector Reader averages 4.5 from 4.7K ratings.
Do JDoe or EMF Radiation Detector Reader have ads?
EMF Radiation Detector Reader shows ads; JDoe does not.
Which is updated more often, JDoe or EMF Radiation Detector Reader?
JDoe ships an update fortnightly, and EMF Radiation Detector Reader every 7 months. Most recently, JDoe was updated on October 7, 2026 and EMF Radiation Detector Reader on October 15, 2026.

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