Comparison

dB vs Decibel Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

dB

This utility app allows Bluetooth control of a meter for recording, reading, and deleting data. Visualize parameter trends with graphical curves and receive timely alerts for accurate measurements.

Highlights
  • Bluetooth meter control
  • Record, read, and delete data
  • Visualize parameter trends with curves
  • Accurate alarm function
  • Data analysis
Features
Read full description

Using dB-Tester, you can control the recording, reading, deleting and other functions of the meter via bluetooth connection. The parameters such as the noise value returned by the meter can be drawn into a curve, so that the user can directly see the variation trend of the parameters. The alarm function can alert the user, accurate and practical.

About

Decibel Pro

Transform your device into a professional sound level meter and noise dosimeter. Track real-time audio levels, monitor daily noise exposure, and generate detailed reports with photos and videos. Customize settings for various environments and receive alerts for loud noises.

Highlights
  • Real-time sound level readings (dBA, dBC, dB)
  • Noise dosimeter with OSHA/NIOSH standards
  • Background measurement with Live Activity
  • Save and export measurements (PDF, CSV)
  • Photos/videos with sound level stamps
  • Customizable alerts and profiles
  • Sync with Apple Health
Features
Read full description

Decibel Pro turns your iPhone or iPad into a sound level meter and noise dosimeter. See how loud it is right now, how much noise you have taken in today, and keep a record you can show to others. SOUND LEVEL METER • Real-time readings in dBA, dBC or unweighted dB • Average (Leq), minimum, maximum and peak for every measurement • Slow, Fast and Impulse response times, as defined by IEC 61672 • Every level explained in plain words, from quiet to harmful • A live chart of the level and an octave-band spectrum NOISE DOSIMETER • Your daily noise dose against the OSHA or NIOSH standard • TWA, maximum level, projected dose and the time left at the current level • Keeps measuring in the background, with a Live Activity on the Lock Screen and in the Dynamic Island LIBRARY AND REPORTS • Save measurements with their time and, if you like, their location • Search and compare measurements, shifts, photos and videos • Export as PDF or CSV • Photos and videos with the sound level stamped on them SUMMARY AND ALERTS • Your daily exposure over 7 and 30 days, with the 7-day average and the noisiest day • A loud noise alert at the threshold you choose • A weekly summary • Sync with Apple Health SET UP FOR HOW YOU USE IT • Profiles for General, Work & Shift, Sensitive Hearing, Sleep & Kids, Stage & Studio and Log & Evidence set up the Lock Screen card and alerts for you • Home Screen widgets • Calibration against a reference meter • A glossary and a reference chart of everyday sounds • Designed for iPad as well as iPhone ABOUT ACCURACY iPhone and iPad microphones are most reliable between about 30 and 100 dB; louder sounds can be clipped by the hardware. Decibel Pro is for information only and does not replace a certified sound level meter. Questions or ideas: ealtaca@gmail.com Privacy Policy: https://altaca.notion.site/Decibel-Pro-Privacy-Policy-407dd1c646a0805997f4fc99a96eba4b Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

dB4 screens
Decibel Pro4 screens

Verdict

The call

The clearest difference is rating: Decibel Pro at 4.4 against dB's 1.0. Decibel Pro also leads on ratings volume (75 vs 1). dB's advantage is update cadence (every 3 weeks vs every 36 months) and iOS requirement (11.0 vs 16.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Decibel Pro holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Decibel Pro has 75 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

dB ships an update every 3 weeks, Decibel Pro every 36 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

Scorecard4 real differences · 6 level
dB versus Decibel Pro: the parameters behind the verdict, then further details
ParameterdBDecibel Pro
PriceFreeFree
Rating1.0 (1 ratings)4.4 (75 ratings) — better
Positive reviews—83.3% of reviews
Number of ratings175 — better
Update frequencyEvery 3 weeks — betterEvery 36 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better16.1
Further details — not scored
Size6 MB14 MB
Age rating4+4+
DeveloperShenzhen Jumaoyuan Science and Technology Co., Ltd.Emre Can Altaca

In-app purchases

None

dB

No in-app purchases

None

Decibel Pro

No in-app purchases

Questions

Is dB free?
dB is free to download, with no in-app purchases.
Is Decibel Pro free?
Decibel Pro is free to download, with no in-app purchases.
Which has better reviews, dB or Decibel Pro?
Decibel Pro is rated higher. dB averages 1.0 out of 5 from 1 ratings, while Decibel Pro averages 4.4 from 75 ratings.
Do dB or Decibel Pro have ads?
Neither dB nor Decibel Pro shows ads.
Which is updated more often, dB or Decibel Pro?
dB ships an update every 3 weeks, and Decibel Pro every 36 months. Most recently, dB was updated on November 2, 2026 and Decibel Pro on November 4, 2026.

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