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Android Apps > Medical > Hearing Aid APP:PETRALEX 4 EAR
Hearing Aid APP:PETRALEX 4 EAR icon

Hearing Aid APP:PETRALEX 4 EAR

4.5.9
Mobile software development
4.47
15,987 reviews
1,000,000+
Downloads
Free

Petralex Hearing Aid App – advanced volume booster & hearing amplifier

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Screenshots by Mobile software development, from the Google Play listing
View on Google Play Also on the App Store

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.

Official page on Google Play

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 Play

Comments on Hearing Aid APP:PETRALEX 4 EAR for Android

★★★★★ Chara Paloca · Aug 18, 2026
I have found hearing aids' app, but I am trying to hear. Thank you!
★★★★★ Md Zobair Hossen · Aug 22, 2026
Write now myself can't afford it. With all type of function if myself will then I'll bless
★★★★★ Jayson Picaso · Feb 18, 2026
Excellent and very useful I will recommend this to all my friends and college
★★★★★ Leanna Kiger · Oct 27, 2026
Wow! I gotta admit this is way better than my expensive hearing aids I had! Pretty neat to be able to use this with my Spotify as well. Thank you.
★☆☆☆☆ Hector Morales · May 4, 2026
THE ABSOLUTE LAG. It's NEARLY IMPOSSIBLE TO GET OUT OF THE FACT THE LAG. YOU HEAR (WELL I HEAR) A TINY BIT USUALLY. Then you are gey happy with app you purchased. Then yhe APP REFUSES TO USE THE MIC ON THE HEADPHONES. FPR 60 BUCKS. 1ST BULLSHEIZZE. 2ND BULLSHEIZZE: IF YOU REFUSE TO USE THE BLUETOOTH HEADPHONES TOGETHER WITH THE MIC, AND IF YOU LOVE YHAT DEVICES MIC SO BAD, WHY DOES IT LAG ALSO WITH WIRED HEADPHONEZ? THE GOOGLE FREEBIE INCLUDED IN ACCESSIBILITY SUCKS TOO. BUT AT LEAST IT DON'T LAG.
★☆☆☆☆ Dallas B · Jan 17, 2026
These guys are dishonest thieves. I go to sign up for there free trial to try it out, and it charged me for a year subscription with no free trial. I deleted the app after about 20 minutes cuase it wqs not what I expected if I could give. Ive never had a business do that before. Straight scam

Google Play Rating history and histogram

11K
2.8K
740
230
890

Store listing

By Mobile software development, from Google Play
Description by Mobile software development Written by the developer, not by AppBrain. Click to read.
Petralex - Personal Audio Amplifier & Sound Enhancer

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

26 permissions · 34 libraries
Subscribe to see full permission and library details

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
Show all changes Show fewer

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Also available on the App Store

HEARING AID APP | Live listen icon HEARING AID APP | Live listen
Hearing Aid App Solutions LLC
4.1
Free
2.1K ratings

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

Top rankings

Rank Country Category List
197 Russia Medical Top Free
Show all market rankings

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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Developer information for Mobile software development

Mobile software development

support@petralex.pro

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