Comparison

Perxcept vs Decibel Shield

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

Head to head
About

Perxcept

This Safari Web Extension passively tracks your exposure to healthcare content on select websites. It collects no personal information and aims to keep doctors, patients, and hospitals informed about healthcare news. Participation is currently invite-based.

Highlights
  • Passive content exposure monitoring
  • Healthcare content focus
  • No personal information collection
  • Safari Web Extension
  • Invite-based participation
Features
Read full description

Help us understand which websites matter to you. Perxcept is a Safari Web Extension by ZoomRx for your iPhone/iPad that passively monitors your exposure to healthcare-related content across select websites. None of your personal information is collected as part of this research. Your contributions will help other doctors, patients, and hospitals stay up-to-date on the latest in healthcare news and developments. Perxcept is currently invite-based, so only users who have been sent an invite code will be able to sign in and participate.

About

Decibel Shield

Measure and track sound levels in real-time with this user-friendly decibel meter. Log historical data, integrate with Apple Health, and gain insights into your sound environment. Includes a white noise generator for focused listening.

Highlights
  • Real-time decibel monitoring
  • Historical data tracking
  • Apple Health integration
  • White noise generator
  • iCloud sync
  • Location tagging
  • Background processing
Features
Read full description

Decibel Shield™ : Sound Level Meter Discover the power of sound around you with Decibel Shield™ , the free and user-friendly app designed to make noise level measurement simple and insightful. Whether you're monitoring workplace noise, checking the volume at events, or just curious about everyday sound levels, Decibel Shield™ offers an easy-to-use solution right at your fingertips. Key Features Real-Time Decibel Monitoring: Instantly view the current sound levels in decibels (dB) with precise accuracy. Perfect for those needing an accurate dB meter. Historical Data Tracking: Keep a log of all your measurements with date and time stamps for future reference. Apple Health App Integration: Save sound levels to iOS health app to track historical levels. White Noise Generator: Listen to different sounds including white,brown,blue noise and more. Trends View: Provides insights into your sound level measurements over different periods. Explore various statistics and trends to better understand your sound environment. Location Tagging: Record the location of your measurements, ideal for comparing noise levels across different places. Max and Average dB Readings: Alongside real-time data, view the highest and average decibel readings of each session. Background Processing: Measure sound levels even when the app is running in the background. VU Meter Visual Representation: A dynamic VU meter provides a visual understanding of current noise levels. Important Notice The sound level measurement provided by this app is for informational purposes only. While we strive to ensure the accuracy of the measurements, we cannot guarantee that the results are entirely precise due to various factors such as device calibration, microphone quality, and environmental conditions. By using this app, you agree to the following: No Guarantee of Accuracy: The measurements and results provided by this app are not guaranteed to be accurate and should not be relied upon for critical or professional purposes. User Responsibility: Users are solely responsible for the interpretation and use of the data provided by this app. We strongly recommend using professional sound level meters and consulting with qualified professionals for accurate measurements and health-related concerns. Limitation of Liability: The developers, owners, and affiliates of this app shall not be held liable for any damages, injuries, or adverse effects resulting from the use or misuse of the app or the reliance on the data provided. This includes, but is not limited to, direct, indirect, incidental, and consequential damages. Health and Safety: If you have any concerns about noise levels and their impact on your health, please consult with a medical professional or an accredited specialist in sound measurement and acoustics. Visit NIOSH website for more. By downloading and using this app, you acknowledge that you have read, understood, and agreed to this disclaimer. Decibel Shield™ Premium Subscription Information: Joining the Decibel Shield™ Premium Subscription may include a 7-day free trial, followed by a yearly membership fee. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • Account will be charged for renewal within 24-hours prior to the end of the current period. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription, where applicable. Privacy Policy : https://appstack.wixsite.com/apps/policies Terms of Service : https://appstack.wixsite.com/apps/terms

Screenshots

Perxcept4 screens
Decibel Shield4 screens

Verdict

The call

The clearest difference is rating: Decibel Shield at 4.7 against Perxcept's 3.7. Decibel Shield also leads on update cadence (daily vs every 2 months) and ratings volume (632 vs 3). Perxcept's advantage is in-app purchases (none vs 4) and review sentiment (100% vs 77%). On price, ads and iOS requirement 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 Shield sells 4 in-app purchases, starting at $1.99 per 7 days. Perxcept asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Decibel Shield holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: Decibel Shield has 632 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 100% of Perxcept's written reviews are positive against 77% of Decibel Shield's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Perxcept ships an update every 2 months, Decibel Shield daily. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard7 real differences · 3 level
Perxcept versus Decibel Shield: the parameters behind the verdict, then further details
ParameterPerxceptDecibel Shield
PriceFreeFree
Rating3.7 (3 ratings)4.7 (632 ratings) — better
Positive reviews100.0% of reviews — better76.9% of reviews
Number of ratings3632 — better
Update frequencyEvery 2 monthsDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size21 MB43 MB
Age rating4+4+
DeveloperZoomRx Inc.APPSTACK LLC

Customer experience

Perxcept

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Decibel Shield

All ratings623 ratings
Positive93.6%
Neutral2.6%
Negative3.9%
Written reviews13 reviews
Positive76.9%
Neutral15.4%
Negative7.7%

In-app purchases

None

Perxcept

No in-app purchases

4 purchases

Decibel Shield

Subscriptions4
  • Premium Weekly7 Days trial$1.997 Days
  • Premium Monthly7 Days trial$4.991 Month
  • Annual Membership7 Days trial$44.991 Year
Show 1 more
  • Premium Yearly7 Days trial$49.991 Year

Questions

Is Perxcept free?
Perxcept is free to download, with no in-app purchases.
Is Decibel Shield free?
Decibel Shield is free to download, with in-app purchases available.
Which has better reviews, Perxcept or Decibel Shield?
Decibel Shield is rated higher. Perxcept averages 3.7 out of 5 from 3 ratings, while Decibel Shield averages 4.7 from 632 ratings.
Do Perxcept or Decibel Shield have ads?
Neither Perxcept nor Decibel Shield shows ads.
Which is updated more often, Perxcept or Decibel Shield?
Perxcept ships an update every 2 months, and Decibel Shield daily. Most recently, Perxcept was updated on October 24, 2026 and Decibel Shield on October 21, 2026.

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