Comparison

Vision Viewer vs Impulse Noise Decibel Meter

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

Head to head
About

Vision Viewer

Features
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Key Features: β€’ Transparent Browsing - Overlay webpages transparently on your rear camera β€’ Opacity Control - Adjust background and content transparency in real-time β€’ Multiple Tabs - Manage multiple tabs just like Chrome β€’ Bookmarks - Organize bookmarks with folder structure β€’ File Viewer - Supports PDF, images, Markdown, and ePUB β€’ Archive Files - ZIP/CBZ image viewer Browse the web while walking, check recipes while cooking, stay informed while seeing the real world!

About

Impulse Noise Decibel Meter

Features
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Firearm Noise Testing | Sound Level Meter helps you monitor sound levels (dB) in real time. It’s designed for very loud environments such as workshops, concerts, and outdoor ranges, so you can make better hearing-safety decisions. The app uses your phone’s microphone to estimate sound pressure level and shows current, minimum, average, and maximum readings with clear visual feedback. Key features β€’ Real-time decibel meter (dB) β€’ Min / Avg / Max tracking β€’ A-weighting (dBA) for everyday noise (closest to human hearing) β€’ C-weighting (dBC) for very loud environments and peak levels β€’ Linear mode for raw/technical readings (no filtering) β€’ Sensitivity calibration (+/βˆ’) to compensate for device microphone differences β€’ Clean, readable interface for quick checks Important notes β€’ This app is not a certified or laboratory-grade sound level meter. Readings vary by device model, microphone hardware, phone case, distance, and environment. β€’ For general information and personal awareness only. Not intended for legal, regulatory, medical, or workplace compliance measurements. β€’ Very loud sounds can damage hearing quickly. Always use appropriate hearing protection in loud environments. Privacy β€’ Microphone input is used only to calculate sound level. β€’ We do not sell personal data.

Screenshots

Vision Viewer4 screens
Impulse Noise Decibel Meter2 screens

Verdict

The call

The clearest difference is ads: Impulse Noise Decibel Meter at none against Vision Viewer's shown. Vision Viewer's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences Β· 3 level
Vision Viewer versus Impulse Noise Decibel Meter: the parameters behind the verdict, then further details
ParameterVision ViewerImpulse Noise Decibel Meter
PriceFreeFree
Update frequencyEvery 3 weeksβ€”
AdsYesNo β€” better
In-app purchasesNoNo
DevicesiPhone, iPad, iPod β€” betteriPhone
Requires iOS13.0 β€” better17.0
Further details β€” not scored
Size61 MB1 MB
Age rating17+4+
DeveloperYOON HO YOUNGTigran Mkhitaryan

In-app purchases

None

Vision Viewer

No in-app purchases

None

Impulse Noise Decibel Meter

No in-app purchases

Questions

Is Vision Viewer free?
Vision Viewer is free to download, with no in-app purchases.
Is Impulse Noise Decibel Meter free?
Impulse Noise Decibel Meter is free to download, with no in-app purchases.
Do Vision Viewer or Impulse Noise Decibel Meter have ads?
Vision Viewer shows ads; Impulse Noise Decibel Meter does not.

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