Decibel X: dB Noise Meter, SLM

Name: Decibel X: dB Noise Meter, SLM
Rating: 4.6 (14148 reviews)
Author: SkyPaw Co., Limited

Sound Level SPL & Audio Tools

Free · In-App Purchases · Designed for iPad

14K Ratings
Ages

4+
Years
Category

Utilities
Developer

SkyPaw Co., Limited
Language

EN
+ 11 More
Size

85.3
MB

This app turns your iOS device into a professional sound level meter, detects harmful environmental noises, and helps protect your hearing and health. "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

Ratings & Reviews

4.6

out of 5

14K Ratings

Very Useful
30/08/2017

Eduardo2u
Simple to use and easy to understand. Also very useful. So far it has helped me to balance my home studio speakers; and ascertain how loud the noise was in the restaurant when having lunch. I recommend spending the few dollars for the 'pro' version-it's great value.
Very Useful
30/08/2017

Eduardo2u

Simple to use and easy to understand. Also very useful. So far it has helped me to balance my home studio speakers; and ascertain how loud the noise was in the restaurant when having lunch. I recommend spending the few dollars for the 'pro' version-it's great value.
Twisted Pricing Model, Basic Features Locked.
28 Feb

YurrBoiSwayZ
Decibel X has one of the weirdest pricing setups I’ve seen, it gives away fancy frequency analysis and real‑time graphs for free yet basic stuff like recording and importing/exporting files is stuck behind a subscription?It’s totally backward but If all you need is a quick decibel check the free version is everything you need I guess but the minute you try to save or share your data you’re out of luck unless you pay up.What really kills me is how it flips the usual premium approach on its head, you’d typically see the essential features unlocked and the more advanced ones as paid extras but Decibel X does the opposite, sure you get the “cool” features at no charge but what good is advanced analysis if you can’t record or export it without coughing up more money? it’s an absolutely stupid model that ends up being more frustrating than helpful.

Developer Response
Hi, YurrBoiSwayZ! Thanks for your feedback. We appreciate the useful information you provide and we are working hard to develop and improve our app even better to make up for the limitations of mobile devices. We look forward to hearing from you in the future
Twisted Pricing Model, Basic Features Locked.
28 Feb

YurrBoiSwayZ

Decibel X has one of the weirdest pricing setups I’ve seen, it gives away fancy frequency analysis and real‑time graphs for free yet basic stuff like recording and importing/exporting files is stuck behind a subscription?It’s totally backward but If all you need is a quick decibel check the free version is everything you need I guess but the minute you try to save or share your data you’re out of luck unless you pay up.What really kills me is how it flips the usual premium approach on its head, you’d typically see the essential features unlocked and the more advanced ones as paid extras but Decibel X does the opposite, sure you get the “cool” features at no charge but what good is advanced analysis if you can’t record or export it without coughing up more money? it’s an absolutely stupid model that ends up being more frustrating than helpful.
Developer Response 4 Mar
Hi, YurrBoiSwayZ! Thanks for your feedback. We appreciate the useful information you provide and we are working hard to develop and improve our app even better to make up for the limitations of mobile devices. We look forward to hearing from you in the future
Not accurate at all
08/12/2021

Fabihoe
Don’t get it, one star is pre generous enough. App failed to complete the very task it claims to do. It doesn’t measure the decibels accurately, i thought maybe i was imagining it but i changed to my airpods which were quieter than the headphones but said it was at 107DB using live hearing. I then switch to the headphones i have been using which can go louder and using this app, the app says to have measured abt an average of 89DB at its max volume which my headphones were playing at a clearly louder volume compared to my airpods. I was listening to the same song and listened at the same volume (max) for both audio devices).
Not accurate at all
08/12/2021

Fabihoe

Don’t get it, one star is pre generous enough. App failed to complete the very task it claims to do. It doesn’t measure the decibels accurately, i thought maybe i was imagining it but i changed to my airpods which were quieter than the headphones but said it was at 107DB using live hearing. I then switch to the headphones i have been using which can go louder and using this app, the app says to have measured abt an average of 89DB at its max volume which my headphones were playing at a clearly louder volume compared to my airpods. I was listening to the same song and listened at the same volume (max) for both audio devices).
Deceptive Pop-ups Will Charge You
29/05/2020

chooooioioiooooooo
This app is useful, but users should be aware of somewhat deceptive pop ups on first launch, with a very small X button to close, which will attempt to subscribe you to a trial of their paid service, and which will charge you after a certain period of time. See all the one-star reviews for proof of this.The pop ups also reappear immediately a few times after closing. You do NOT have to agree to the trial or any paid services to use this app. Otherwise, it is functional and works well. Thanks.
Deceptive Pop-ups Will Charge You
29/05/2020

chooooioioiooooooo

This app is useful, but users should be aware of somewhat deceptive pop ups on first launch, with a very small X button to close, which will attempt to subscribe you to a trial of their paid service, and which will charge you after a certain period of time. See all the one-star reviews for proof of this.The pop ups also reappear immediately a few times after closing. You do NOT have to agree to the trial or any paid services to use this app. Otherwise, it is functional and works well. Thanks.

Thanks for using Decibel X! Here's what's new for the version 9.9.4: ∿ [Fixes] - Fix a UI issue for the bottom tab bar ∿ [Improvements] - Upgrade library components ∿ [Improvements] - Several other minor tweaks & bug fixes What to expect in upcoming versions: ∿ Support external or bluetooth mics ∿ Hearing test