Comparison

Decibel dB vs Fast Mobile 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

Fast Mobile QR Code Scanner

Scan and create QR codes and barcodes for various purposes, including websites, contacts, and event tickets. Features include fast performance, a user-friendly interface, and a history log to track your scans. Unlock full functionality with an auto-renewable subscription.

Highlights
  • Scan QR codes and barcodes
  • Generate custom QR codes and barcodes
  • History management
  • Fast performance
  • User-friendly interface
Features
Read full description

Introducing our powerful QR code scanner and generator app—your all-in-one solution for scanning and creating codes with ease and efficiency! Auto-renewable subscription purchase required to get access to the following features: - Versatile Scanning: Seamlessly scan QR codes and a variety of barcodes, including product, event, and URL codes. - Comprehensive Code Generation: Effortlessly generate custom QR codes and barcodes for websites, contact details, Wi-Fi networks, event tickets, and more. - History Management: Keep track of your scans with our intuitive history feature. - Lightning-fast Performance: Enjoy rapid scanning and code generation without interruptions. - User-Friendly Interface: Our sleek and intuitive design makes scanning and generating codes straightforward for everyone, from first-time users to tech enthusiasts. Download now and elevate your code scanning and generating experience! Subscription Information: - Payment will be charged to your iTunes account at the time of purchase. - Subscriptions are available on a weekly, monthly, quarterly, or annual basis, depending on your chosen plan. - Subscriptions automatically renew unless you turn off auto-renewal at least 24 hours before the end of the current period. - Your account will be charged for renewal within 24 hours prior to the end of the current period, at the rate for your chosen plan. - Manage your subscription and disable auto-renewal through your account settings. Privacy Policy: https://docs.google.com/document/d/1lcDNy_z34ZoFjNG4Q9fhYVhdc0EM-TFHC9W4BCCOUys/edit?usp=sharing Terms of Use: https://docs.google.com/document/d/1eD3jn4LuPGL_G8rjlmsnEqfzv9oMt1Pf6e8B4TcTRRA/edit?usp=sharing

Screenshots

Decibel dB3 screens
Fast Mobile QR Code Scanner4 screens

Verdict

The call

The clearest difference is monetization model: Fast Mobile QR Code Scanner at free with in-app purchases against Decibel dB's subscription. Fast Mobile QR Code Scanner also leads on update cadence (daily vs every 4 months). Decibel dB's advantage is ratings volume (685 vs 37) and review sentiment (77% vs 67%). On price, rating, ads and in-app purchases 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 Fast Mobile QR Code Scanner sells 1 in-app purchase, 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

On the App Store both sit at effectively the same score — 4.7 for Decibel dB against 4.6 for Fast Mobile QR Code Scanner. That said, the two scores are not equally well evidenced: Decibel dB has 685 ratings behind it against 37, so its average is the more settled of the two. Written reviews are what separate them: 77% of Decibel dB's written reviews are positive against 67% of Fast Mobile QR Code Scanner's.

UpkeepUpdate frequency

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

Scorecard5 real differences · 5 level
Decibel dB versus Fast Mobile QR Code Scanner: the parameters behind the verdict, then further details
ParameterDecibel dBFast Mobile QR Code Scanner
PriceFreeFree
Rating4.7 (685 ratings) — better4.6 (37 ratings)
Positive reviews77.4% of reviews — better66.7% of reviews
Number of ratings685 — better37
Update frequencyEvery 4 monthsDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPod — betteriPhone
Requires iOS12.4 — better17.0
Further details — not scored
Size32 MB8 MB
Age rating4+4+
DeveloperITincubator UABRonald Starkel

Customer experience

Decibel dB

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

Fast Mobile QR Code Scanner

All ratings34 ratings
Positive88.2%
Neutral2.9%
Negative8.8%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

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

Fast Mobile 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
1 purchases

Fast Mobile QR Code Scanner

Subscriptions1
  • 3-day trial then 6.99$/week3 Days trial$6.997 Days

Questions

Is Decibel dB free?
Decibel dB is free to download, with in-app purchases available.
Is Fast Mobile QR Code Scanner free?
Fast Mobile QR Code Scanner is free to download, with in-app purchases available.
Which has better reviews, Decibel dB or Fast Mobile QR Code Scanner?
Decibel dB is rated higher. Decibel dB averages 4.7 out of 5 from 685 ratings, while Fast Mobile QR Code Scanner averages 4.6 from 37 ratings.
Do Decibel dB or Fast Mobile QR Code Scanner have ads?
Neither Decibel dB nor Fast Mobile QR Code Scanner shows ads.
Which is updated more often, Decibel dB or Fast Mobile QR Code Scanner?
Decibel dB ships an update every 4 months, and Fast Mobile QR Code Scanner daily. Most recently, Decibel dB was updated on October 22, 2026 and Fast Mobile QR Code Scanner on October 24, 2026.

Other comparisons