Comparison

Decibel dB vs QR Code Reader. Scanner App

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

Head to head
About

Decibel dB

Measure ambient noise and sound levels in real-time with this tool. It helps control noise pollution and protect user health by displaying decibel values numerically and graphically. Track exposure over time with NIOSH and OSHA compliant measurements.

Highlights
  • Measure noise in decibels (dB)
  • Track MIN, AVG, MAX sound levels
  • Record and export measurements
  • Overlay noise levels on photos/videos
  • NIOSH and OSHA compliant meter
Features
Read full description

Decibel Meter is an app intended for objective, real-time measurement of ambient noise and sound levels. It is intended for noise pollution control with the aim to protect the health of its users. The app displays quantitative noise level values in decibels using various measurements both in numerical and graphical form. The app also features a fully functional noise level meter to measure the user’s noise exposure over a period of time according to NIOSH and OSHA (to be chosen by the user). FEATURES: • Measure noise level in decibels (dB); • Track minimum (MIN), average (AVG) and maximum (MAX) sound levels; • Record measurement results; • Save, export and play recorded measurements; • Photos and videos with the ambient noise level overlay; • Noise level meter compliant with NIOSH and OSHA. The app was created with the purpose to prevent negative noise effects on the health of its users. Please choose from our standard subscription options below: 1-week subscription from $2.99; 1-month subscription from $5.99; 12-month subscription from $10.99. Prices may change depending on your country. Privacy policy: https://it-incubator.eu/en/privacy-policy ​​Terms of use: https://it-incubator.eu/en/terms-of-use

About

QR Code Reader. Scanner App

This utility app quickly and easily scans QR codes and barcodes, automatically performing actions based on the scanned content. It offers a user-friendly interface, scan history, and advanced customization options for everyday use.

Highlights
  • Fastest QR and barcode scanning
  • Automatic action performance
  • Scan history log
  • Advanced settings and customization
  • Supports various code types
Features
Read full description

Our app is likely the fastest and most user-friendly QR code and barcode scanner available. It’s a must-have tool for everyday use. Key Features: - User-Friendly: Simple and straightforward to use. - Action-Based: Automatically performs appropriate actions based on the QR code or barcode scanned. - Scan History: Keeps a record of your scanned codes. - Advanced Settings: Offers various customization options. - Versatile Scanning: Supports various types of codes. How to Use: To scan a QR code or barcode, open the app, point your camera at the code, and the app will automatically read and display the information quickly. Customize your app settings to optimize the QR code reader according to your device and personal preferences. Subscription Details: - Payment deducted from your Apple ID account upon purchase confirmation. - Subscription automatically renews unless canceled at least 24 hours before the current period ends. - Account charged for renewal within 24 hours before the current period concludes. - Manage and cancel subscriptions in your account settings on the App Store after purchase. Privacy Policy: https://docs.google.com/document/d/1g6NN_O9f85b4hdQhEnAkBQ8247gAKiv1_sCWyuDUkYI/edit Terms of Use: https://docs.google.com/document/d/1T3SVC2sfeqEuKxzUrdhCbjUq6MuelCuErmTZgl4JNXI/edit

Screenshots

Decibel dB3 screens
QR Code Reader. Scanner App4 screens

Verdict

The call

The clearest difference is monetization model: QR Code Reader. Scanner App at free with in-app purchases against Decibel dB's subscription. QR Code Reader. Scanner App also leads on update cadence (daily vs every 4 months). Decibel dB's advantage is ratings volume (676 vs 9) and rating (4.7 vs 4.4). On price, ads, in-app purchases 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. Decibel dB sells 6 in-app purchases, starting at $3.99 per 7 days and QR Code Reader. Scanner App sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Decibel dB holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Decibel dB has 676 ratings behind it against 9, so its average is the more settled of the two.

UpkeepUpdate frequency

Decibel dB ships an update every 4 months, QR Code Reader. Scanner App daily. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
Decibel dB versus QR Code Reader. Scanner App: the parameters behind the verdict, then further details
ParameterDecibel dBQR Code Reader. Scanner App
PriceFreeFree
Rating4.7 (676 ratings) — better4.4 (9 ratings)
Positive reviews77.4% of reviews—
Number of ratings676 — better9
Update frequencyEvery 4 monthsDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPod — betteriPhone
Requires iOS12.4 — better17.2
Further details — not scored
Size32 MB23 MB
Age rating4+4+
DeveloperITincubator UABMarvin Wimmer

Customer experience

Decibel dB

All ratings676 ratings
Positive95.0%
Neutral3.6%
Negative1.5%
Written reviews31 reviews
Positive77.4%
Neutral9.7%
Negative12.9%

QR Code Reader. Scanner App

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%

Bugs and requests

Decibel dB

Reported bugs

2 issues
  • Inaccurate decibel readings in some environments
  • Occasional crashes or freezes

Requested features

2 requests
  • Ability to record and export noise measurements
  • Integration with smart home devices

QR Code Reader. Scanner App

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Decibel dB

Subscriptions6
  • Sound Level Meter Pro7 Days trial$3.997 Days
  • Weekly Access$3.997 Days
  • Decibel Meter: Pro Version7 Days trial$6.991 Month
Show 3 more
  • Monthly Access$6.991 Month
  • Noise Level Meter (dB) Pro7 Days trial$12.991 Year
  • Yearly Access$12.991 Year
2 purchases

QR Code Reader. Scanner App

Subscriptions2
  • QRCodeReaderWeeklyTrial3 Days trial$6.997 Days
  • QRCodeReaderWeeklyWithoutTrial$6.997 Days

Questions

Is Decibel dB free?
Decibel dB is free to download, with in-app purchases available.
Is QR Code Reader. Scanner App free?
QR Code Reader. Scanner App is free to download, with in-app purchases available.
Which has better reviews, Decibel dB or QR Code Reader. Scanner App?
Decibel dB is rated higher. Decibel dB averages 4.7 out of 5 from 676 ratings, while QR Code Reader. Scanner App averages 4.4 from 9 ratings.
Do Decibel dB or QR Code Reader. Scanner App have ads?
Neither Decibel dB nor QR Code Reader. Scanner App shows ads.
Which is updated more often, Decibel dB or QR Code Reader. Scanner App?
Decibel dB ships an update every 4 months, and QR Code Reader. Scanner App daily. Most recently, Decibel dB was updated on October 15, 2026 and QR Code Reader. Scanner App on October 7, 2026.

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