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72
BU Score
Strong

Dezibel X - dBA Lärm Messgerät

4.7 ✍️ Editor
✍️ BU Analytics Review

Dezibel X - dBA Lärm Messgerät is an iOS app from SkyPaw Co., Limited in the Utilities category, currently rated 4.7★ across 156,901 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Our BU Score puts it at 72Strong (healthy traction). For a Utilities app, that means healthy traction.

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

📊 Performance Tracking LIVE

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Reviews
Forecast Revenue / mo
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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 14 of 14 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
High install base (156,901 ratings)METRIC
+$12,000
Paid app ($0.00)METRIC
+$2,800
Excellent rating (4.7★)METRIC
+$2,200
bugsREVIEW
−$1,800
5 starREVIEW
+$1,800
great valueREVIEW
+$1,600
cancelledREVIEW
−$1,500
excellent appREVIEW
+$1,500
Mature app (14y old)METRIC
+$1,500
Multilingual (12 languages)METRIC
+$1,500
highly recommendREVIEW
+$1,400
slowREVIEW
−$1,200
too expensiveREVIEW
−$1,000
priceyREVIEW
−$800
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
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Feb 26
Mar 26
Apr 26
May 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 →
💾 86 MB🔞 4+📱 iOS 13.0+🔖 v9.9.5🔄 updated 1mo ago🌐 NL, EN, FR, DE, IT +7📂 Utilities💰 Paid🚀 Launched 2011 (14y old)

📝 About this app

"Decibel X" is one of very few noise meter apps on the market that has highly reliable, pre-calibrated measurements and supports dBA, dBC. It turns your iOS device into a professional sound level meter, precisely measures the sound pressure level (SPL) all around you. This extremely useful and beautiful tool will not only be a great tool for many uses but also bring you a lot of fun. Have you wondered how quiet is your room or how loud is a rock concert or sport event? "Decibel X" will help you answer all of those.

WHAT MAKE IT GREAT AND STAND OUT FROM OTHER APPS:

- Trusted accuracy: the app is tested and pre calibrated for all Apple devices. The precision is matching with real SPL devices
- Apple Watch support: see noise level right from your wrist
- Health App integration: export noise levels directly into Health app
- Frequency weighting filters: ITU-R 468, A, B, C, Z
- Powerful, smart history data management:
+ Recording data can be saved into a list of history records for future access and analysis
+ Each record can be exported as hi-res PNG graph or CSV text via sharing services
+ iCloud support which synchronize all history records across your Apple devices
+ Fullscreen mode to give overview the whole history of an record
- Dosimeter with NIOSH, OSHA standards
- Powerful calibration: Linear, Octave 1/1, 1/3, Load/save profile
- FFT and BAR graphs to display real time FFT. Those are very useful for frequency analysis and musical tests. Real time predominant frequency is also displayed.
- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, Messages, etc.).
- Support Live Activity, Dynamic Island
- Support both Portrait and Landscape layouts
- Beautiful, intuitive and carefully crafted UI design. Themes: LIGHT, DARK and CLASSIC

OTHER GREAT FEATURES:

- Standard time weightings (Response Time): SLOW (500 milliseconds), FAST (200 milliseconds) AND IMPULSE (50 milliseconds)
- MIC Gain Offset from -50 dB to 50 dB
- Standard measurement range from 30 dBA up to 130 dBA
- HISTO graph for plotted history of the recorded values
- WAVE graph with 2 display modes: Rolling & Buffer
- SPECTROGRAPH
- Real time scale level chart
- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layouts
- Quick reference text to help you compare with real-life examples

NOTES:

- Please do not expect a quiet room reading will be 0 dBA. The range 30-130 dBA is the standard usable range and an average quiet room will be about 30 dBA.
- Although all devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. You will need a real external device or calibrated sound meter as a reference, then adjust the trimming calibration until the reading matches with the reference.

* Privacy Policy: http://www.skypaw.com/decibelx/privacy_policy.html
* EULA: http://www.skypaw.com/decibelx/terms.html

🆕 What's New · v9.9.5

Thanks for using Decibel X! Here's what's new for the version 9.9.5:
∿ [Fixes] - Fix an issue with restoring purchases in paywall screen
∿ [Fixes] - Fix an UI issue for the bottom tab bar
∿ [Improvements] - Support for new devices
∿ [Improvements] - Upgrade library components
∿ [Improvements] - Several other minor tweaks & bug fixes

What to expect in upcoming versions:
∿ Support external or bluetooth mics
∿ Hearing test

Profile & Insights

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

Identification

App name
Dezibel X - dBA Lärm Messgerät
Developer
SkyPaw Co., Limited
Bundle ID
com.skypaw.decibel
App Store URL
Open in App Store
Category
Utilities
Content rating
4+
Languages
NL, EN, FR, DE, IT, JA, KO, PT, ZH, ES, ZH, VI

Company

Website
Not found
Tagline
Not found
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
$70.0KAI medium
AI annual estimate
$840.0K/yr
ML model estimate / mo
$287/mo
Top-grossing rank
🇩🇪#93 /100
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
http://twitter.com/skypawcom
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
facebook · twitter
Email
Not found
Phone
Not found
Contact page
https://skypaw.com/support.html
About page
https://skypaw.com/about.html
AI Revenue EstimateCONFIDENCE: MEDIUM
The iOS app "Dezibel X - dBA Lärm Messgerät" by SkyPaw Co., Limited is estimated to generate approximately $70,000 in monthly revenue, leading to an annual estimate of $840,000. The app offers various in-app purchases, including monthly, weekly, and annual memberships.
Sources mentioned: Adapty
Recent App Store Reviews49 latest · avg 3.55★ · 53.1% 5★ · 26.5% 1★
5★
26 (53%)
4★
3 (6%)
3★
5 (10%)
2★
2 (4%)
1★
13 (27%)
+251 ratings/week
Praise: great ×8 fantastic ×3 love ×2 best ×2 amazing ×2Complaints: subscription ×3 expensive ×1 scam ×1 broken ×1 bug ×1
Top positive
★★★★★ Just amazing!
Having a sound pressure meter and spectrometer is SO USEFUL for an audiophile and musician who also works in noisy environments. And I paid nothing, though I’d like to. It works especially well on newer phones, and so responsive. THANKS!!…
★★★★★ This app is a life saver
There are so many features that would allow me to collect evidence I need to prove noise harassment from my neighbor who lives directly above me. Thank you truly…
Top negative
★☆☆☆☆ Now Pushes A Subscription!
Paid for it originally and now tries to get you to subscribe. I don’t care what the dev of this app says which is usually a caned response. They should not have any splash or anything related to paying for some greed driven subscription sho…
★☆☆☆☆ Annoying prompts
Quit asking me to upgrade every single time I open the app…
📈Ratings growth156,901 ratings+16% lifetimeShow 3-year history estimate ▾May 2023Nov 2025May 2026
Tracked (51 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic DistributionTop 10Top 30Top 60
DE#93
📊Category Rank Trajectory#93 now · best #85 · worst #100
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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