Hearing Aid APP:PETRALEX 4 EAR v4.5.6
Algorithm electronics
About this app
The Petralex Hearing Aid App is a highly-rated medical application designed to solve the problem of hearing difficulties by providing an advanced volume booster and hearing amplifier, benefiting individuals with hearing impairments the most. Compared to alternatives in the Medical category, Petralex stands out with its excellent user rating and significant download numbers, indicating a high level of user satisfaction. However, its effectiveness and comparison to dedicated hearing aid devices or other apps in the same category may vary. The app's simplicity and lack of permissions required are notable advantages, but its reliance on in-app purchases for full functionality might be a drawback for some users.
Pros
- With over 1 million downloads and a 4.5-star rating, Petralex demonstrates strong social proof and user satisfaction, indicating a well-designed and effective application.
- The app's developer, Algorithm electronics, provides a professional website and support email, suggesting a commitment to customer support and updates, which is crucial for a medical application.
- The absence of ads and minimalistic approach to in-app purchases, with prices ranging from $1.49 to $59.99, suggests a user-centric monetization model that does not overly disrupt the user experience.
- Petralex's requirement of zero permissions is a significant advantage, ensuring user data privacy and security, which is paramount for a medical app.
- The app's compatibility with Android 8.1 and later versions ensures that a wide range of devices can utilize the application, making it accessible to a broad audience.
Cons
- The reliance on in-app purchases for potentially critical features might limit the app's usefulness for users who are not willing or able to pay, creating a tiered experience based on financial investment.
- Despite its high rating, some users might find the app's functionality limited compared to dedicated hearing aid devices or more comprehensive hearing assistance applications, which could offer more features or better performance.
- The lack of detailed information about the app's algorithms and how it amplifies sound could raise questions about its effectiveness for different types of hearing impairments, potentially making it less appealing to users seeking a more tailored solution.
- There is a potential for the app to be used inappropriately or as a substitute for professional medical advice or devices, which could lead to negative outcomes for users with severe hearing issues.
Best for: The ideal user for the Petralex Hearing Aid App is an individual with mild to moderate hearing impairments, likely in the adult or elderly age group, who is seeking a convenient, non-invasive, and easily accessible tool to assist with everyday hearing difficulties, and who values privacy and is comfortable with the potential limitations of a mobile application compared to dedicated medical devices.
Developer Description
Petralex Hearing Aid App – advanced volume booster & hearing amplifier
# Key Benefits
● Personalized Sound – Adapts to your unique audiogram or hearing profile.
● Award-Winning Tech – Microsoft Inspire P2P Winner (2017).
● No Ads, No Sign-Up – Just plug in and enjoy improved clarity.
● Trusted by 4.000.000+ Users – Join a GLOBAL COMMUNITY focused on better listening.
# FREE Features You’ll Love
‣ Custom amplification for each side – LEFT/RIGHT BALANCE CONTROL.
‣ Smart environment adaptation – From QUIET ROOMS to CROWDED STREETS.
‣ 30 dB Boost – ⌘ WIRED HEADSET RECOMMENDED for ZERO LAG.
‣ Built-in hearing test – YOUR PERSONALIZED AUDIOGRAM in MINUTES.
‣ 4 Sound Modes – FIND YOUR PREFERRED STYLE.
‣ Bluetooth & wired support – NOTE: BLUETOOTH may add SLIGHT DELAY.
‣ Remote Mic Mode – USE YOUR PHONE as a WIRELESS MICROPHONE.
‣ Live Listen – PICK UP CONVERSATIONS across the room EFFORTLESSLY.
# PREMIUM Upgrade (7-Day Free Trial)
Unlock next-level performance with:
■ Super Boost Mode – ULTRA-POWERFUL ENHANCEMENT.
■ Noise Suppression – REDUCE BACKGROUND CHATTER.
■ Unlimited Sound Profiles – SAVE SETTINGS for DIFFERENT ENVIRONMENTS.
■ Tinnitus-Friendly Mode – GENTLE, COMFORTABLE SOUND.
■ Advanced Dectone Tech – CLEAR and NATURAL AUDIO.
■ Audio Recorder – CAPTURE VOICES with OPTIMIZED CLARITY.
■ Music Player with Smart Boost – TAILOR PLAYBACK TO YOUR PROFILE.
● NEW: Live audio recording – CAPTURE SOUND while AMPLIFYING in REAL-TIME.
● NEW: Audio transcription – GET INSTANT TEXT VERSIONS of SPOKEN CONTENT.
● NEW: Play stored music using your CUSTOM SOUND PROFILE – WORKS with LOCAL FILES, DROPBOX, GOOGLE DRIVE, or WIFI TRANSFERS.
# Flexible Plans (Cancel Anytime)
◆ Weekly – RISK-FREE TRIAL.
◆ Monthly – GREAT for SHORT-TERM USE.
◆ Annual – BEST VALUE.
⌘ IT TAKES TIME TO GET USED TO ANY HEARING APP! BE READY FOR:
* Adaptation takes SEVERAL WEEKS TO MONTHS.
* You will hear SOUNDS YOU HAVE NOT HEARD BEFORE – use the BUILT-IN NOISE REDUCTION.
* Some familiar sounds may SEEM METALLIC – this DISAPPEARS WITH TIME.
USE THE BUILT-IN 4-WEEK ADAPTIVE COURSE FOR A COMFORTABLE TRANSITION.
⌘ Disclaimer:
The Petralex Hörgeräte App® is NOT APPROVED as a MEDICAL DEVICE.
The hearing test provided is ONLY for APP ADJUSTMENT and DOES NOT REPLACE PROFESSIONAL AUDIOLOGY TESTS (ENT consultation required).
The Service includes a FREE 7-DAY TRIAL — ENOUGH TIME to decide whether to CONTINUE or STOP using the app. Refunds AFTER this period are NOT available.
Questions, feedback or suggestions?
Contact us: support@petralex.pro
More about our terms:
Terms of service: petralex.pro/page/terms
Privacy policy: petralex.pro/page/policy
◆ EXPERIENCE LIFE IN FULL DETAIL – TRY PETRALEX TODAY!
Privacy
Given that Petralex requires zero permissions, the risk of data collection or privacy breaches appears to be minimal. However, users should still be cautious when using any medical application and ensure they understand the terms of service and privacy policy. It's also crucial to consult with a healthcare professional before relying solely on an app for hearing assistance.
Tips
For optimal performance, users should ensure their device's volume is set appropriately before using the app, and they should explore the app's settings to customize the sound amplification to their specific needs. Additionally, users can benefit from regularly checking for updates, as the developer's commitment to support suggests ongoing improvements and potential feature additions.
What's New
Enhanced dynamic compression to AMPLIFY quiet sounds
Added LIVE TRANSCRIBER — speech-to-text in real time
Thank you for your feedback — we keep improving!
In-app purchases
$1.49 - $59.99 per item
Version Information
- Version
- 4.5.6
- Downloads
- 1M+
- Updated on
- Jan 13, 2026
- Released
- Apr 1, 2014
- Requires
- Android 8.1
Statistics
Google Play Rating History
Rating Distribution
Downloads Over Time
Hearing Aid APP:PETRALEX 4 EAR has been downloaded times. Over the past 30 days, it averaged downloads per day.
Shaded area shows 30-day prediction based on historical trends
Historical data collection started recently. More data points will be available over time.
Hearing Aid APP:PETRALEX 4 EAR - Google Play Rankings
Top Rankings
| Rank | Country | Category | List | Change |
|---|---|---|---|---|
| — |
Ranking History in
No ranking data available yet. Rankings are updated daily.
#50 in Top Grossing Medical in United States
#13 in Top Grossing Medical in Philippines
#15 in Top Grossing Medical in Japan
#17 in Top Grossing Medical in Italy
Hearing Aid APP:PETRALEX 4 EAR users say on Google Play
Vincent Delemos
Not a fan of most apps claiming7 greatness......This isnt one of those apps.... Lots of extras to experiment with in different situations...\i really suggest this app for those paranoid tweakerz. If you take late night early morning walks you can listen to nature come aliv3
Jack Parker
it works good to my phone shuts down
Chuck Knowles
overall great app. but shouldn't harass the customer or user every single time you sign in or use about payment. and every time you touch a button on anything on the app it's a 30 second ad each and every time......
Tom K
amplifier ok but can't turn it off once opened. I had to uninstall just to stop it. A bit s**t really as I only need it occasionally. Will not reinstall.
nivixis nivixis
ther is like one second delay in hearing which is really annoying.
ApkTrusted Ratings & Reviews
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