Comparison

Decibel dB vs QR Code Scanner

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 Scanner

Instantly scan and decode various QR codes using your device's camera. Access websites, product details, Wi-Fi networks, and more with a simple, intuitive interface. Offers advanced features like history sync, custom code creation, and batch scanning through a subscription.

Highlights
  • Instant QR code scanning
  • Supports all QR code types
  • Ad-free experience (with subscription)
  • Unlimited scans (with subscription)
  • History and cloud sync (with subscription)
  • Custom QR code creation (with subscription)
  • Batch scanning (with subscription)
Read full description

Our app is a fast and reliable tool for scanning and decoding QR codes instantly. Whether you're accessing websites, product information, Wi-Fi networks, or digital content, this app makes it effortless. With a simple and intuitive interface, you can scan codes with just a tap using your device's camera. It supports all types of QR codes, including text, URLs, contact info, and more. The app is lightweight and highly responsive, providing quick results without any hassle. Ideal for both everyday users and businesses, the our app is a must-have tool for seamless connectivity and interaction. After purchasing an auto-renewable subscription, you will gain access to all features, such as: - Ad-Free Experience: Enjoy uninterrupted scanning without any ads, allowing for a smoother and faster experience. - Unlimited Scans: Perform an unlimited number of scans without any daily limits, perfect for frequent users or businesses. - History and Cloud Sync: Access a detailed history of all your scanned QR codes, saved across devices with cloud synchronization, ensuring you never lose important data. - Custom QR Code Creation: Generate personalized QR codes for URLs, contact information, Wi-Fi access, and more, with added customization options for branding or personal use. - Enhanced Scan Accuracy and Speed: Experience faster scan times with improved accuracy, even for low-light environments or damaged codes. - Batch Scanning: Scan multiple QR codes in one session, saving time during large-scale events or product checks. Subscription Information - Your subscription will be charged to your iTunes account at purchase confirmation and will automatically renew for the selected duration unless you turn off auto-renewal at least 24 hours before the current period ends. - Active subscriptions cannot be canceled during their period; however, you can manage your subscription or disable auto-renewal by visiting your iTunes Account Settings after purchase. Privacy Policy: https://docs.google.com/document/d/1SEqzmI18b1wotUWqVcffEn3fFjj9bD4MxBt4MTp-BQ0/edit?usp=sharing Terms of Use: https://docs.google.com/document/d/1SUrnM3z6_OGhFci0t2KdrGfIC_1SFinBKDR67uJLCbY/edit?usp=sharing

Screenshots

Decibel dB3 screens
QR Code Scanner4 screens

Verdict

The call

The clearest difference is monetization model: QR Code Scanner at freemium against Decibel dB's subscription. QR Code Scanner also leads on update cadence (fortnightly vs every 4 months). Decibel dB's advantage is rating (4.7 vs 4.5) and ratings volume (685 vs 41). 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 Scanner sells 4 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 4.5. That said, the two scores are not equally well evidenced: Decibel dB has 685 ratings behind it against 41, so its average is the more settled of the two.

UpkeepUpdate frequency

Decibel dB ships an update every 4 months, QR Code Scanner fortnightly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Decibel dB versus QR Code Scanner: the parameters behind the verdict, then further details
ParameterDecibel dBQR Code Scanner
PriceFreeFree
Rating4.7 (685 ratings) — better4.5 (41 ratings)
Positive reviews77.4% of reviews—
Number of ratings685 — better41
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPod — betteriPhone
Requires iOS12.4 — better16.0
Further details — not scored
Size32 MB11 MB
Age rating4+4+
DeveloperITincubator UABSpartak Datiashvili

Customer experience

Decibel dB

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

QR Code Scanner

All ratings40 ratings
Positive87.5%
Neutral7.5%
Negative5.0%

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 Scanner

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
4 purchases

QR Code Scanner

Subscriptions4
  • Weekly$6.997 Days
  • Weekly trial3 Days trial$6.997 Days
  • Monthly$14.991 Month
Show 1 more
  • Yearly$29.991 Year

Questions

Is Decibel dB free?
Decibel dB is free to download, with in-app purchases available.
Is QR Code Scanner free?
QR Code Scanner is free to download, with in-app purchases available.
Which has better reviews, Decibel dB or QR Code Scanner?
Decibel dB is rated higher. Decibel dB averages 4.7 out of 5 from 685 ratings, while QR Code Scanner averages 4.5 from 41 ratings.
Do Decibel dB or QR Code Scanner have ads?
Neither Decibel dB nor QR Code Scanner shows ads.
Which is updated more often, Decibel dB or QR Code Scanner?
Decibel dB ships an update every 4 months, and QR Code Scanner fortnightly. Most recently, Decibel dB was updated on October 22, 2026 and QR Code Scanner on October 24, 2026.

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