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Petralex Hearing Aid App – advanced volume booster & hearing amplifier
AppBrain's verdict
EstablishedPopularWell rated- Rating on Google Play
- 4.47
- 15,987 ratings
- Installs
- 2 million
- Last updated
- February 5, 2026
- Ads
- No ads
- Size
- 82.7 MB
Hearing Aid APP:PETRALEX 4 EAR is popular, with 2 million installs. Users rate it well: 4.5 stars from 15,987 ratings.
Pros & Cons
- Personalized amplification that adapts to your audiogram
- Ads-free experience with a straightforward setup
- Built-in audio calibration for rapid personalization
- Flexible listening options with Bluetooth and wired connections
- Not certified as a medical device or medical-grade hearing aid
- Premium features require a trial (not a guaranteed long-term commitment)
- Bluetooth can introduce minor latency in some environments
User feedback
Ratings and reviews on Google PlayComments on Hearing Aid APP:PETRALEX 4 EAR for Android
Google Play Rating history and histogram
Store listing
By Mobile software development, from Google PlayDescription by Mobile software development Written by the developer, not by AppBrain. Click to read.
Petralex transforms Android smartphone into a sophisticated audio amplifier & hearing app companion. Enjoy MUSIC BOOST with 3x AMPLIFIER, personalized settings, clear sound, noise reducer & built-in hearing test. Petralex — advanced SUPER HEARING app.
# 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 audio adjustment per ear – INDIVIDUAL LEFT/RIGHT BALANCE to amplify precisely.
‣ Intelligent environment adaptation – From SILENT SPACES to BUSY AREAS.
‣ 30 dB Audio Enhancement – ⌘ FOR MINIMAL LATENCY, WIRED HEADSETS ARE SUGGESTED.
‣ Built-in audio calibration tool – CREATE YOUR PERSONALIZED SETTING in MINUTES.
‣ 4 Audio Modes – DISCOVER YOUR FAVORITE STYLE for optimal listening.
‣ Bluetooth & wired connection – NOTE: BLUETOOTH might introduce MINOR DELAY.
‣ Remote Microphone Function – TRANSFORM YOUR PHONE into a PORTABLE MICROPHONE.
‣ Live Audio Capture – MORE EASILY PERCEIVE CONVERSATIONS in YOUR SPACE with this live listen feature.
# PREMIUM Upgrade (7-Day Free Trial)
Access advanced audio features with:
■ Maximum Boost Setting – EXTREME AUDIO ENHANCEMENT to amplify significantly.
■ Advanced Noise Reducer – MINIMIZE AMBIENT NOISE effectively.
■ Unlimited Custom Profiles – STORE SETTINGS for EVERY SITUATION.
■ Comfort Audio Mode – SOFTER, MORE PLEASANT SOUND.
■ Advanced Dectone Technology – PRISTINE and AUTHENTIC AUDIO.
■ Voice Capture Feature – RECORD SPEECH with IMPROVED CLEARNESS.
■ Media Player with Adaptive Boost – CUSTOMIZE PLAYBACK to YOUR SETTINGS.
● NEW: Concurrent audio capture – RECORD while ENHANCING AUDIO LIVE.
● NEW: Speech-to-text conversion – RECEIVE IMMEDIATE TRANSCRIPTS of DIALOGUE.
● NEW: Playback of stored media with your PERSONAL PROFILE – COMPATIBLE with DEVICE STORAGE, DROPBOX, GOOGLE DRIVE, or WIFI SHARING.
# Flexible Plans (Cancel Anytime)
◆ Weekly – NO-RISK EVALUATION PERIOD for this hearing app.
◆ Monthly – IDEAL for TEMPORARY USE.
◆ Annual – MOST ECONOMICAL CHOICE.
⌘ ADAPTING TO AUDIO ENHANCEMENT APPLICATIONS REQUIRES PATIENCE! PLEASE NOTE:
Adjustment may occur over SEVERAL WEEKS.
You might perceive AUDIO DETAILS PREVIOUSLY UNNOTICED – utilize the INTEGRATED NOISE REDUCER.
Certain sounds could initially appear UNFAMILIAR – this SENSATION TYPICALLY FADES.
FOR A SMOOTHER ADJUSTMENT, USE THE INCLUDED 4-WEEK GUIDED PROGRAM.
⌘ Important Notice:
The Petralex application is an audio enhancement tool. IT IS NOT CERTIFIED AS A MEDICAL DEVICE, HEARING AID APP, OR SUPER HEARING SOLUTION.
The included audio calibration tool (similar to a basic hearing test) helps create a personal audiogram for app settings ONLY. IT IS NOT A SUBSTITUTE FOR PROFESSIONAL HEARING ASSESSMENTS conducted by a qualified specialist (an ENT consultation is advised for hearing health concerns).
This service offers a FREE 7-DAY EVALUATION — sufficient to determine if you wish to PROCEED or DISCONTINUE using this hearing app. Refunds ARE NOT PROVIDED once this trial period concludes.
Questions, feedback or suggestions? Contact us: support@petralex.pro
For further details:
Terms of service: petralex.pro/page/terms
Privacy policy: petralex.pro/page/policy
◆ REDISCOVER THE DETAILS IN YOUR AUDIO – EXPERIENCE PETRALEX NOW!
Recent changes:
Built-in Music Player for HEARING-impaired
Enhanced dynamic compression to AMPLIFY quiet sounds
Added LIVE TRANSCRIBER — speech-to-text in real time
Thank you for your feedback — we keep improving!
Safety and technology
Found in the app by AppBrain- Ads
- No ads
- Price
- Free
- Libraries
- 34
- App size
- 82.7 MB
- Needs Android
- 8.1+
- Content rating
- Everyone
Technologies used by Hearing Aid APP:PETRALEX 4 EAR
Releases
Updates seen on Google Play- Version
- 4.5.9
- Launched
- April 2014
- Feb 5, 2026UpdateVersion 4.5.9
- Dec 12, 2025UpdateVersion 4.5.6
- Dec 3, 2025UpdateVersion 4.5.5
- Sep 24, 2025UpdateVersion 4.5.3
- Sep 16, 2024UpdateVersion 4.4.4
Alternatives
Similar apps and more from Mobile software developmentAlternatives to Hearing Aid APP:PETRALEX 4 EAR
More from Mobile software development
Also available on the App Store
Installs
Tracked by AppBrain- Last 30 days
- 5.1 thousand
- Per day
- 170
- 30-day average
- Play install range
- 1+ million
- Launched
- April 2014
Installs over time
Hearing Aid APP:PETRALEX 4 EAR has been installed 2 million times. Over the past 30 days, it averaged 170 installs per day.
Rankings
Google Play top charts- Highest rank
- #197
- Chart
- Top Free
- Medical
- Country
- Russia
Google Play Rankings for Hearing Aid APP:PETRALEX 4 EAR
Ranking history in Russia
About the app and developer
About Hearing Aid APP:PETRALEX 4 EAR
Hearing Aid APP:PETRALEX 4 EAR is a medical app developed by Mobile software development.
How many times has Hearing Aid APP:PETRALEX 4 EAR been downloaded?
Hearing Aid APP:PETRALEX 4 EAR has been downloaded 2 million times. In the last 30 days, the app was downloaded 5.1 thousand times.
What is the rating of Hearing Aid APP:PETRALEX 4 EAR?
Hearing Aid APP:PETRALEX 4 EAR is rated 4.47 out of 5 stars, based on 16 thousand ratings.
Is Hearing Aid APP:PETRALEX 4 EAR free?
Hearing Aid APP:PETRALEX 4 EAR is free. The APK size is 82.71 MB. The latest APK version available is 4.5.9. The last update was on February 5, 2026.
What are the requirements for Hearing Aid APP:PETRALEX 4 EAR?
Hearing Aid APP:PETRALEX 4 EAR requires Android 8.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since April 2014.
Hearing Aid APP:PETRALEX 4 EAR is made and published by Mobile software development. AppBrain is an independent app data site and isn't affiliated with Mobile software development. The app name, icon, screenshots and description belong to Mobile software development and are shown as published on Google Play.
App Performance Report
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