Comparison

Decibel dB vs QR & Barcode Reader

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 & Barcode Reader

Easily scan QR codes and barcodes to access detailed information, view scan history, and organize your findings. Offers batch scanning and export options for efficient data management. Upgrade for unlimited scans and an ad-free experience.

Highlights
  • QR and barcode scanning
  • Detailed product and food info
  • Scan history log
  • Organized folders
  • Batch scanning
  • Export scans to CSV
  • Supports 15+ code types
Features
Read full description

Discover the ultimate app for scanning both QR Codes and Barcodes with ease! Packed with robust features: - Detailed information on products and food items - Comprehensive data cards for each QR Code scanned - Full scan history log - Organized folders for easy management - Batch scanning for quick results - Export scans to CSV for added convenience Supports over 15 types, including QR Code, Barcode, Datamatrix, Code128, Code39, EAN-8, EAN-13, Google Authenticator, and more! SUBSCRIPTION OPTIONS - Upgrade to a PRO account to enjoy unlimited scans, detailed product info, and an ad-free experience. - Choose from flexible subscription plans: 1-month, 1-week, or 1-year options. - Subscriptions renew automatically for the same period (1 month, 1 week, or 1 year) unless auto-renew is turned off at least 24 hours before the current period ends. - Charges will be applied to your iTunes account at the time of purchase confirmation. - Manage your subscriptions and turn off auto-renewal anytime in your Account Settings. - Please note, any unused portion of a free trial will be forfeited once a subscription is purchased. Privacy Policy: https://telegra.ph/Privacy-Policy-11-08-258 Terms for Use: https://telegra.ph/Terms-of-Use-11-08-3

Screenshots

Decibel dB3 screens
QR & Barcode Reader4 screens

Verdict

The call

The clearest difference is monetization model: QR & Barcode Reader at freemium against Decibel dB's subscription. QR & Barcode Reader also leads on update cadence (every 3 days vs every 4 months). Decibel dB's advantage is rating (4.7 vs 4.2) and ratings volume (685 vs 19). 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 & Barcode Reader sells 3 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 4.2. That said, the two scores are not equally well evidenced: Decibel dB has 685 ratings behind it against 19, so its average is the more settled of the two.

UpkeepUpdate frequency

Decibel dB ships an update every 4 months, QR & Barcode Reader every 3 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Decibel dB versus QR & Barcode Reader: the parameters behind the verdict, then further details
ParameterDecibel dBQR & Barcode Reader
PriceFreeFree
Rating4.7 (685 ratings) — better4.2 (19 ratings)
Positive reviews77.4% of reviews—
Number of ratings685 — better19
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPod — betteriPhone
Requires iOS12.4 — better16.0
Further details — not scored
Size32 MB14 MB
Age rating4+4+
DeveloperITincubator UABIlyas Aliyev

Customer experience

Decibel dB

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

QR & Barcode Reader

All ratings13 ratings
Positive69.2%
Neutral15.4%
Negative15.4%

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 & Barcode Reader

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
3 purchases

QR & Barcode Reader

Subscriptions3
  • Weekly3 Days trial$6.997 Days
  • Monthly$19.991 Month
  • Yearly$49.991 Year

Questions

Is Decibel dB free?
Decibel dB is free to download, with in-app purchases available.
Is QR & Barcode Reader free?
QR & Barcode Reader is free to download, with in-app purchases available.
Which has better reviews, Decibel dB or QR & Barcode Reader?
Decibel dB is rated higher. Decibel dB averages 4.7 out of 5 from 685 ratings, while QR & Barcode Reader averages 4.2 from 19 ratings.
Do Decibel dB or QR & Barcode Reader have ads?
Neither Decibel dB nor QR & Barcode Reader shows ads.
Which is updated more often, Decibel dB or QR & Barcode Reader?
Decibel dB ships an update every 4 months, and QR & Barcode Reader every 3 days. Most recently, Decibel dB was updated on October 22, 2026 and QR & Barcode Reader on October 24, 2026.

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