Hearing Aid APP:PETRALEX 4 EAR
Algorithm electronics
4.5 stars15,708 reviews1,000,000+Free
MedicalEveryoneVersion 4.5.9Updated 3/16/2026, 9:06:20 AM
Open in StorePetralex - 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!
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!
Developer email
support@petralex.pro
Developer website
https://petralex.proReleased
Apr 1, 2014
Current version
4.5.9
Android version
8.1
Reviews & Ratings
4.5
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1
😊 Highly rated by users
15,708 reviews