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64
BU Score
Solid

HÖRGERÄT & LAUTSTÄRKE ERHÖHEN

4.3 ✍️ Editor
✍️ BU Analytics Review

HÖRGERÄT & LAUTSTÄRKE ERHÖHEN is an iOS app from Application Development 21 in the Education category, currently rated 4.3★ across 1,479 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Our BU Score puts it at 64Solid (established niche player). For a Education app, that means established niche player.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

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idle
0%
Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
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since first record
Range:

💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 9 of 9 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
5 starREVIEW
+$1,800
cancelledREVIEW
−$1,500
Low install base (1,479 ratings)METRIC
+$1,500
Mature app (8y old)METRIC
+$1,500
Multilingual (14 languages)METRIC
+$1,500
highly recommendREVIEW
+$1,400
priceyREVIEW
−$800
Good rating (4.3★)METRIC
+$800
Ad-supported / freemiumMETRIC
+$600
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Apr 25
May 25
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Feb 26
Mar 26

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 44 MB🔞 4+📱 iOS 16.6+🔖 v3.7.1🔄 updated 1mo ago🌐 KM, EN, FR, DE, HI +9📂 Education💰 Paid🚀 Launched 2018 (8y old)

📝 About this app

LISTENING DEVICE + SOUND AMPLIFIER 4 Music & Video + CAPTION CALL + Customized for the Hard of HEARING
◆Listening Device delivers powerful sound amplification for clearer everyday hearing
◆Enhance speech clarity
◆Reduce background noise
◆Fine-tune audio for headphones & Bluetooth devices
◆Live transcription for calls & conversations

NEW FEATURES:

◆► Personalized Sound for Video & Music
Watch videos with enhanced volume directly in-app. Uses your personalized hearing profile for optimized clarity, with additional settings to fine-tune the sound depending on the content.

◆► Live Transcription
Transcribe speech in real-time – even with your screen locked. Perfect for continuous note-taking during meetings, lectures, or conversations.

◆► Transcribe from Saved Files
Transcribe your recordings or import audio files from Google Drive, Dropbox, iTunes, or local storage. Perfect for capturing meetings, lectures, or personal notes.

FEATURES:

► Voice Recorder & Volume Booster
Amplify sound up to 30 dB with any headphones or Bluetooth devices.

► Three Sound Amplification Modes
Choose from three distinct sound amplification options to tailor your listening experience to different environments and preferences, ensuring optimal audio clarity and volume.

► Health & Wellness
Integrated with HealthKit to monitor hearing health. Use our hearing test for tailored sound enhancement.

► Included Hearing Test
Offers a built-in hearing test to customize the app's sound amplification settings to your unique hearing profile, enhancing your listening experience.

► Noise Reduction
Remove background noise for clearer listening. Includes a microphone for crystal-clear audio capture.

► Hearing Aid Compatibility
Works as a hearing amplifier and live listen tool for improved hearing.

► Speaker & Headphone Volume Booster
Enhance speaker and headphone volume for louder, clearer sound.

► Dynamic Sound Amplification
Adjusts to your hearing needs, amplifying quiet sounds without overwhelming volume.

► Bluetooth & Wired Headset Support
Optimal performance with Bluetooth headsets and AirPods*.

► Hearing Correction
Personalized for each ear, adapting to various environments for optimal hearing.

ADDITIONAL FEATURES:

◆ LIVE BACKGROUND TRANSCRIPTION – Capture speech automatically, even from your pocket or with the screen off.
◆ REMOTE MICROPHONE via smartphone with Bluetooth headset for enhanced TV listening.
◆ SUPER BOOST for powerful sound amplification.
◆ CUSTOM PROFILES for different listening environments.
◆ ADVANCED NOISE SUPPRESSION for speech clarity.
◆ AUDIO RECORDER with personalized sound amplification.

Subscription Options:
Weekly, monthly, or annual access to all app functions.

Subscription Details:
Auto-renewal unless canceled 24 hours before the end of the current period.
Manage subscriptions in Account Settings after purchase.
Compatible with iOS devices, charges to iTunes account.

Disclaimer:
Not a medical device. Audiometric tests are for app personalization, not for medical diagnosis.

Note: Bluetooth use may introduce delay. Echoing possible. Background transcription requires microphone access and may impact battery life.

Terms of Service: https://dectone.pro/site/terms
Privacy Policy: https://dectone.pro/site/policy

🆕 What's New · v3.7.1

Amplify music and any media — hear your favorite content louder and clearer than ever.
Never miss a word: speech-to-text now records conversations automatically, even with the screen off.
Redesigned for hearing loss — larger controls, easier to use for the whole family.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
HÖRGERÄT & LAUTSTÄRKE ERHÖHEN
Developer
Application Development 21
Bundle ID
com.abredikhin.dectone
App Store URL
Open in App Store
Category
Education
Content rating
4+
Languages
KM, EN, FR, DE, HI, ID, JA, PT, RU, ZH, ES, TH, TR, VI

Company

Website
dectone.pro
Tagline
Dectone
Description
Not found
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$5.4K/mo
Top-grossing rank
🇦🇺#37 /99   🇯🇵#48 /96   🇫🇷#56 /100   🇮🇳#57 /99
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
info@dectone.pro
Phone
Not found
Contact page
http://dectone.pro/en/help
About page
Not found
📈Ratings growth1,479 ratings+55% lifetimeShow 3-year history estimate ▾May 2023Sep 2025May 2026
Tracked (57 weeks) Pre-tracking estimate (34 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic DistributionTop 10Top 30Top 60
AU#37JP#48FR#56IN#57
🌍Top Countries — Grossing Rank4 countries
🇦🇺AU
#37 /99
🇯🇵JP
#48 /96
🇫🇷FR
#56 /100
🇮🇳IN
#57 /99
📊Category Rank Trajectory#37 now · best #33 · worst #75
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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