Comparison

MFA Authenticator App vs MRI Guard

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

Head to head
About

MFA Authenticator App

Enhance your online security with this multi-factor authentication app. It provides an extra layer of protection for your accounts by generating time-sensitive codes, even when offline. Secure your sensitive information with ease and peace of mind.

Highlights
  • Quick and easy setup
  • Wide service compatibility
  • Time-sensitive security codes
  • Offline code generation
  • End-to-end encryption
  • Security code protection
Features
Read full description

As cyber threats continue to become more sophisticated, it's essential to use strong and reliable security measures to protect your online accounts. That's where MFA Authenticator comes in – a mobile app designed to provide an extra layer of security to your online accounts, making it harder for hackers to gain access to your sensitive information. One of the most significant advantages of using MFA Authenticator is its ease of use. With this app, you can set up two-factor authentication (2FA) quickly, making it easy to secure your accounts. You can use MFA Authenticator with a wide range of services, including Google, Facebook, Dropbox, and many more. The app generates unique, time-sensitive codes that you can use to verify your identity when logging in to your accounts, ensuring that only you can access your information. Another great feature of MFA Authenticator is its ability to work offline. Unlike some other 2FA solutions that rely on an internet connection, MFA Authenticator can generate codes even when your phone isn't connected to the internet. This feature is particularly useful when traveling or in areas with a weak or non-existent internet connection. MFA Authenticator is also designed to be highly secure, with a range of measures in place to keep your information safe. For example, the app uses end-to-end encryption to ensure that your codes are only visible to you. Additionally, the app has a built-in security code that you need to enter when setting up the app, ensuring that only you can access your account. • Quick and easy to set up • Compatible with a wide range of services • Generates unique, time-sensitive codes for added security • Works offline, making it ideal for travel • Uses end-to-end encryption to keep your information safe • Requires a security code for added protection. Overall, MFA Authenticator is an excellent app that can help you stay safe and secure online. With its ease of use, offline functionality, and strong security features, you can rest assured that your information is well-protected. So why not give it a try and take your online security to the next level? Terms of service: https://www.code4flutter.in/terms-mfauthenticator

About

MRI Guard

Features
Read full description

Your iPhone and Apple Watch are among your most valuable companions — photos, chats, cards, half your life. And of all places, their most dangerous opponent waits at your workplace: an MRI scanner's magnet is never off. One step too far, and the field can wipe or damage your device — or tear it from your hand. We all know to be careful — and still it happens: an emergency, stress, one moment of distraction — and a device that holds so much is done for. Made for everyone who regularly deals with MRI: radiographers and MRI technologists, radiologists, other physicians and nurses in hospitals and practices, service engineers and researchers — and patients with a smartphone in their pocket. With MRI Guard, your devices protect themselves: the app reads the magnetic field around them and sounds a loud, unmistakable alarm as it climbs toward the danger zone — your moment to stop, check, and step back. MADE BY AN MRI PHYSICIST MRI Guard comes from Dr. David Grodzki — MR physicist, inventor of numerous MR patents, and multi-award-winning innovator, including the German Future Award for Technology and Innovation (Deutscher Zukunftspreis), presented by the German President. He builds the app as a hobby, outside his work at Siemens Healthineers — a private project, independent of his employer — and is deliberately careful about what it claims. WHAT IT DOES • Live magnetic-field reading with a clear colour scale (green → red) • Adjustable alarm threshold — default 3 mT, the EU action level for attraction and projectile risk (Directive 2013/35/EU); adjustable from 0.1 to 5 mT • Loud alarm and vibration when the field crosses your threshold — as a critical alert, through Silent and Focus • Keeps monitoring in the background, even with the screen locked • Smart Alarm against false alarms — on by default • Choose your units: microtesla (µT), millitesla (mT) or gauss (G) • Pauses itself while charging (induction charging creates fields of its own) and resumes right after • Warns you when iOS Low Power Mode could delay monitoring • Share places, alarm and notification settings with colleagues — by link or QR code • 10 languages STARTS BY ITSELF AT YOUR WORKPLACE (iPhone) Save your workplace once and MRI Guard arms itself the moment you arrive — hands-free, with a notification confirming it — and stops when you leave. Prefer to decide yourself? Switch to an arrival reminder and start with one tap instead. For reliable detection, allow 'Always' location with Precise Location on and keep Wi-Fi enabled. Shortcuts and Siri are supported too. APPLE WATCH: YOUR SHIFT AS A WORKOUT Record your shift as a workout: the watch shows heart rate, distance and energy live and saves the shift to Apple Health as a Walking workout; your rings fill. Summary and history on the iPhone add steps, stand time, daylight and sound level. During the shift the watch also alarms on your wrist when the magnetic field rises. Leave the workplace and the watch asks. Health data stays on your device. FREE & FULL VERSION Measuring and the live display are free forever. The alarm, automations, Apple Watch and Shortcuts are part of the full version: try everything free for 3 days, then one single purchase — no subscription. PRIVATE BY DESIGN No account, no sign-in. Your saved locations stay on your device — the app never uploads them; they only leave it if you share them yourself. The app can share anonymous, aggregate usage statistics to help improve it — you can turn that off anytime in Settings. IMPORTANT — PLEASE READ MRI Guard is an awareness aid, not a certified safety device or medical instrument. The magnetic sensor in a phone or watch is uncalibrated and saturates at a few millitesla, so it cannot measure strong fields accurately and may not react in every situation. Never rely on it for safety-critical decisions. Always follow your site's MR safety rules and use approved measuring equipment. You are responsible for your own safety and your devices.

Screenshots

MFA Authenticator App4 screens
MRI Guard4 screens

Verdict

The call

The clearest difference is ads: MRI Guard at none against MFA Authenticator App's shown. MRI Guard also leads on update cadence (every 4 days vs monthly). On price, in-app purchases, device support and iOS requirement 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. MFA Authenticator App sells 3 in-app purchases, starting at $3.99 per 7 days and MRI Guard sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

MFA Authenticator App ships an update monthly, MRI Guard every 4 days. The most recent releases landed on September 23, 2026 and October 1, 2026 respectively.

Scorecard2 real differences · 8 level
MFA Authenticator App versus MRI Guard: the parameters behind the verdict, then further details
ParameterMFA Authenticator AppMRI Guard
PriceFreeFree
Rating4.3 (22 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings22 — better—
Update frequencyMonthlyEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS16.6 — better17.0
Further details — not scored
Size69 MB11 MB
Age rating4+4+
DeveloperPetr PolasekDavid Grodzki

In-app purchases

3 purchases

MFA Authenticator App

Subscriptions3
  • Premium 1 Week$3.997 Days
  • Premium 1 Month1 Month trial$9.991 Month
  • Premium 1 Year3 Days trial$29.991 Year
1 purchases

MRI Guard

One-time1
  • MRI Guard Full Version$12.99

Questions

Is MFA Authenticator App free?
MFA Authenticator App is free to download, with in-app purchases available.
Is MRI Guard free?
MRI Guard is free to download, with in-app purchases available.
Do MFA Authenticator App or MRI Guard have ads?
MFA Authenticator App shows ads; MRI Guard does not.
Which is updated more often, MFA Authenticator App or MRI Guard?
MFA Authenticator App ships an update monthly, and MRI Guard every 4 days. Most recently, MFA Authenticator App was updated on September 23, 2026 and MRI Guard on October 1, 2026.

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