Comparison

QR Scanner vs Decibel:db Sound Meter

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

Head to head
About

QR Scanner

This utility app allows you to scan and generate QR codes and barcodes. It also converts images to PDFs and enables digital document signing, streamlining various daily tasks for both personal and professional use.

Highlights
  • QR code and barcode scanning
  • QR code and barcode creation
  • Image to PDF conversion
  • Digital document signing
  • User-friendly interface
Features
Read full description

In a world where technology is advancing rapidly, QR codes and barcodes have become an essential part of our daily lives. That’s where QR Scanner - Reader & Generator comes in, offering all-in-one solutions tailored to your needs. Key Features of the App: QR Code and Barcode Scanning: Effortlessly scan QR codes and barcodes for shopping, events, or work. QR Code Creation: Generate personalized QR codes for social media, Wi-Fi passwords, text, messages, and more. Barcode Creation: Design professional barcodes for your products or business. Convert Images to PDFs: Instantly turn your documents or photos into PDF files. Sign Documents: Approve and share your documents quickly with the digital signature feature. Who Is It For? Students: Easily convert assignments or projects into PDFs for quick sharing. Professionals: Save time by digitally signing documents and creating professional QR codes or barcodes. Retailers & Entrepreneurs: Share product information or add barcodes to items with ease. Social Media Enthusiasts: Create stylish QR codes to promote your social media accounts. Everyday Users: Share Wi-Fi credentials, send messages, or scan barcodes while shopping effortlessly. What Does It Bring to Your Life? Saves Time: Perform complex tasks in just seconds with easy and fast operation. Boosts Professionalism: Make your personal projects or business activities more organized and polished. Enhances Accessibility: A user-friendly interface ensures anyone can use the app with ease. Why Download It Now? This app is designed to make both your personal and professional life more convenient in the digital age. With QR Scanner - Reader & Generator, you’ll save time while accessing solutions tailored to your needs. Its intuitive interface turns even the most complex tasks into simple ones! Download it today to integrate technology into your life and experience the difference! QR Scanner - Reader & Generator: Your ultimate tool for making life more practical and efficient! https://swappyazilim.com/terms.html https://swappyazilim.com/privacy.html

About

Decibel:db Sound Meter

Measure noise levels accurately with this practical tool. It offers real-time decibel monitoring, photo and video recording with decibel watermarks, and downloadable reports for easy noise management.

Highlights
  • Real-time decibel monitoring
  • Photo recording with decibel watermark
  • Real-time video recording
  • Downloadable monitoring reports
  • Detailed decibel detection records
Features
Read full description

This is an efficient and practical noise measurement tool that allows you to accurately measure noise anytime, anywhere. It provides recording, photography, and video recording to help you easily manage noise. [Function Introduction] Professional decibel monitoring: Dynamic real-time monitoring of decibel data. Photo recording data: Decibel watermark shooting recording data Real time video recording: detecting decibel changes at each time interval Monitoring Record Report: Downloadable Decibel Detection Record Form Decibel monitoring record: Detailed record of the detection data at that time 1.Payment: The user deducts the payment through their iTunes account and makes the payment upon confirmation of the purchase 2.Renewal: The user's iTunes account will be charged within 24 hours before expiration, increasing the corresponding subscription period 3.Cancel Renewal: To cancel the renewal, go to "iTunes Store and App Store" ->click on "App ID", enter the "Account Settings" page, click on "Subscription", and select "Cancel Subscription" 4.Privacy Policy: https://docs.qq.com/doc/DRkdDZUVKdUpMR1da 5.Terms of Use: https://docs.qq.com/doc/DRktSRXB2TnlqYlBY

Screenshots

QR Scanner4 screens
Decibel:db Sound Meter4 screens

Verdict

The call

The clearest difference is ads: Decibel:db Sound Meter at none against QR Scanner's shown. Decibel:db Sound Meter also leads on review sentiment (8% vs 0%). QR Scanner's advantage is update cadence (every 11 days vs every 9 months). On price, in-app purchases, monetization model and device support 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. QR Scanner sells 10 in-app purchases, starting at $0.99 per 7 days and Decibel:db Sound Meter sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

QR Scanner ships an update every 11 days, Decibel:db Sound Meter every 9 months. The most recent releases landed on September 21, 2026 and September 26, 2026 respectively.

Scorecard3 real differences · 7 level
QR Scanner versus Decibel:db Sound Meter: the parameters behind the verdict, then further details
ParameterQR ScannerDecibel:db Sound Meter
PriceFreeFree
Rating3.5 (8 ratings) — better—
Positive reviews0.0% of reviews8.3% of reviews — better
Number of ratings8 — better—
Update frequencyEvery 11 days — betterEvery 9 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.413.0 — better
Further details — not scored
Size37 MB27 MB
Age rating4+9+
DeveloperSWAPP YAZILIM LIMITED SIRKETIQinghe Net LLC

Customer experience

QR Scanner

All ratings8 ratings
Positive62.5%
Neutral0.0%
Negative37.5%
Written reviews11 reviews
Positive0.0%
Neutral9.1%
Negative90.9%

Decibel:db Sound Meter

Written reviews12 reviews
Positive8.3%
Neutral0.0%
Negative91.7%

In-app purchases

10 purchases

QR Scanner

Subscriptions10
  • Qr Scanner - Weekly3 Days trial$0.997 Days
  • Qr Scanner - Monthly$2.991 Month
  • Qr Scanner - Weekly3 Days trial$3.997 Days
Show 7 more
  • Qr Scanner - Weekly3 Days trial$5.997 Days
  • Qr Scanner - Weekly3 Days trial$7.997 Days
  • Qr Scanner - Weekly3 Days trial$9.997 Days
  • Qr Scanner - Monthly$14.991 Month
  • Qr Scanner - Monthly$17.991 Month
  • Qr Scanner - Monthly$19.991 Month
  • Qr Scanner - Monthly$24.991 Month
3 purchases

Decibel:db Sound Meter

Subscriptions3
  • Weekly Members3 Days trial$3.997 Days
  • Monthly Membership3 Days trial$5.991 Month
  • Annual Membership3 Days trial$14.991 Year

Questions

Is QR Scanner free?
QR Scanner is free to download, with in-app purchases available.
Is Decibel:db Sound Meter free?
Decibel:db Sound Meter is free to download, with in-app purchases available.
Do QR Scanner or Decibel:db Sound Meter have ads?
QR Scanner shows ads; Decibel:db Sound Meter does not.
Which is updated more often, QR Scanner or Decibel:db Sound Meter?
QR Scanner ships an update every 11 days, and Decibel:db Sound Meter every 9 months. Most recently, QR Scanner was updated on September 21, 2026 and Decibel:db Sound Meter on September 26, 2026.

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