Comparison

Decibel Meter vs Q R Code Reader Scan ™

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

Head to head
About

Decibel Meter

Transform your smartphone into a professional sound measurement tool. Accurately measure real-time sound intensity with multiple weighting modes and track historical data. Ideal for professionals and enthusiasts monitoring noise levels.

Highlights
  • Real-time decibel readings
  • Accurate +/- 1 dB precision
  • A-weighted and C-weighted modes
  • Graphing and historical tracking
  • Background logging
  • User-friendly interface
Features
Read full description

Precision Sound Monitoring for Professionals and Enthusiasts Decibels Meter Pro transforms your smartphone into a professional-grade sound measurement tool. Whether you're a musician, engineer, workplace safety professional, or simply curious about the noise levels around you, our app delivers accurate, real-time sound intensity measurements with unparalleled ease and precision. Key Features: Highly Accurate Sound Level Measurement Real-time decibel (dB) readings with +/- 1 dB precision Supports multiple measurement modes (A-weighted, C-weighted) Instant graphing and historical sound level tracking Professional Applications: Construction site noise monitoring Music and audio engineering Workplace safety assessments Environmental noise studies Home and urban noise analysis User-Friendly Design: Clean, intuitive interface Instant readings with large, clear display Background tracking and logging Low battery consumption Try Decibels Meter Pro and take control of your sound environment today! Privacy Policy: https://decibelmeter.pro/privacy-policy Terms of Use: https://decibelmeter.pro/terms-of-use

About

Q R Code Reader Scan ™

Instantly read QR codes and barcodes from your camera or saved photos. Offers smart actions like opening websites, calling numbers, or adding contacts. All scans are automatically saved for easy access.

Highlights
  • Scan from camera or gallery
  • Instant QR/barcode detection
  • Smart actions for scanned data
  • Automatic scan history
  • Easy sharing of results
  • Clean and simple interface
Features
Read full description

Quickly scan any QR code – anytime, anywhere. QR Code Reader Scan makes scanning fast and simple. Just point your camera, or select a photo from your gallery. The app instantly detects and reads any QR code or barcode. All your QR needs in one app. Easily scan codes from your camera or photo files. Whether it’s a website link, phone number, contact info, or plain text – QR Scanner handles it all. Take instant action. Once scanned, choose from smart actions: • Open a website • Call a number • Send a message • Add contact details • Open a map location • Copy the text • Share the result with others • etc Never lose a scan. Your scan history is saved automatically. You can go back anytime to view past QR codes and use the data again. Why choose QR Scanner? • Fast and accurate scanning • Works with camera and saved images • Smart actions for every QR type • Easy sharing • Clean and simple design Start scanning smarter today! Download QR Code Reader Scan now and experience the easiest way to scan and use QR codes. QR Code Reader Scan app is free. You can use it forever, at no cost. However, QR Code Reader Scan does offer premium features for its subscribers. If you decide to purchase an upgrade, you will unlock additional features. Terms of Use: https://olivetapp.github.io/QR-Code-Reader-Scan/term-of-use Privacy Policy: https://olivetapp.github.io/QR-Code-Reader-Scan/privacy-policy

Screenshots

Decibel Meter4 screens
Q R Code Reader Scan ™4 screens

Verdict

The call

The clearest difference is review sentiment: Q R Code Reader Scan ™ at 100% against Decibel Meter's 25%. Q R Code Reader Scan ™ also leads on rating (4.7 vs 4.4). Decibel Meter's advantage is ads (none vs shown) and update cadence (weekly vs every 9 months). On price, ratings volume, 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. Decibel Meter sells 5 in-app purchases, starting at $6.99 per month and Q R Code Reader Scan ™ sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Q R Code Reader Scan ™ holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 36 and 57 respectively. Written reviews point the same way: 25% of Decibel Meter's written reviews are positive against 100% of Q R Code Reader Scan ™'s.

UpkeepUpdate frequency

Decibel Meter ships an update weekly, Q R Code Reader Scan ™ every 9 months. The most recent releases landed on August 27, 2026 and September 9, 2026 respectively.

Scorecard4 real differences · 6 level
Decibel Meter versus Q R Code Reader Scan ™: the parameters behind the verdict, then further details
ParameterDecibel MeterQ R Code Reader Scan ™
PriceFreeFree
Rating4.4 (36 ratings)4.7 (57 ratings) — better
Positive reviews25.0% of reviews100.0% of reviews — better
Number of ratings3657 — better
Update frequencyWeekly — betterEvery 9 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size8 MB16 MB
Age rating4+4+
DeveloperDepict, IncorporatedKartika Ardiani

Customer experience

Decibel Meter

All ratings36 ratings
Positive86.1%
Neutral2.8%
Negative11.1%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

Q R Code Reader Scan ™

All ratings57 ratings
Positive96.5%
Neutral0.0%
Negative3.5%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

5 purchases

Decibel Meter

Subscriptions4
  • Decibels Plus$6.991 Month
  • Decibels Plus7 Days trial$6.991 Month
  • Decibels Plus7 Days trial$44.991 Year
Show 1 more
  • Decibels Plus$44.991 Year
One-time1
  • Decibels Plus - Lifetime$199.99
4 purchases

Q R Code Reader Scan ™

Subscriptions3
  • QR Code Reader Pro - 1W$1.997 Days
  • QR Code Reader Pro - 1M$3.991 Month
  • QR Code Reader Pro - 1Y3 Days trial$19.991 Year
One-time1
  • QR Code Reader Pro$39.99

Questions

Is Decibel Meter free?
Decibel Meter is free to download, with in-app purchases available.
Is Q R Code Reader Scan ™ free?
Q R Code Reader Scan ™ is free to download, with in-app purchases available.
Which has better reviews, Decibel Meter or Q R Code Reader Scan ™?
Q R Code Reader Scan ™ is rated higher. Decibel Meter averages 4.4 out of 5 from 36 ratings, while Q R Code Reader Scan ™ averages 4.7 from 57 ratings.
Do Decibel Meter or Q R Code Reader Scan ™ have ads?
Q R Code Reader Scan ™ shows ads; Decibel Meter does not.
Which is updated more often, Decibel Meter or Q R Code Reader Scan ™?
Decibel Meter ships an update weekly, and Q R Code Reader Scan ™ every 9 months. Most recently, Decibel Meter was updated on August 27, 2026 and Q R Code Reader Scan ™ on September 9, 2026.

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