Hearing Aid APP:PETRALEX 4 EAR

1.8M installs
15.4K ratings
+1.2K weekly installs
trend steady
+9.6K monthly installs
trend steady

Hearing Aid APP:PETRALEX 4 EAR Summary

Hearing Aid APP:PETRALEX 4 EAR is a with in-app purchases Android app in the Medical category, developed by Algorithm electronics. First released 11 years ago(Apr 2014), the app has accumulated 1.8M+ total installs and 15.4K ratings with a 4.54★ (excellent) average rating.

Recent activity: 1.2K installs this week (9.6K over 4 weeks) showing steady growth , and 32 new ratings this week (201 over 4 weeks) with stable momentum. View trends →

Data tracking: SDKs and third-party integrations were last analyzed on Jan 29, 2026. The app's network data flows (API traffic to/from the app and its SDKs) were last crawled on Jul 20, 2025.

Store info: Last updated on Google Play on Jan 13, 2026 (version 4005006).


4.54★

Ratings: 15.4K

5★
4★
3★
2★
1★

Screenshots

App screenshot
App screenshot
App screenshot
App screenshot

App Description

Petralex Hearing Aid App – advanced volume booster & hearing amplifier

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!