Comparison

Decibel Sondex vs Campus Command

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

Head to head
About

Decibel Sondex

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Sondex measures the noise around you β€” and shows exactly what it means for how you feel. Why does the noise around you matter? We sit in noisy cafes, work in open-plan offices, walk along busy streets β€” and rarely think about how all of this affects us. Constant background noise drains your energy, kills concentration, and over time, subtly impacts your well-being. Sondex helps you understand the sound environment around you β€” so you can make better decisions about where you spend your time. FOR EVERYONE β€” Simple and instant Open Sondex anywhere and see in real time how loud your surroundings are. No settings. No complex parameters. What you get: - Live decibel indicator β€” always updating, always accurate - Average, minimum, and peak noise levels for any session - Noise threshold alerts when sound levels cross your personal comfort limit - Session saving to compare your favorite places over time - Export detailed PDF reports for any recorded session - Human health impact analysis based on recorded noise levels Use it to: - Find the quietest table at a cafΓ© before you sit down - Check if your home office is truly quiet enough for work - Know when noise at the gym or a concert becomes excessive - Monitor noise levels outdoors or in your yard You don't need to know anything about acoustics. Just open the app β€” and the answer is right in front of you. PRO β€” Deep analysis for serious users. Sondex is also a full-featured acoustic measurement tool β€” built for those who need more than just a number on a screen. Exposure Dose and TWA (Time-Weighted Average) Tracks how much noise you've been exposed to over an entire session. Calculates your time-weighted average level and predicts what a full 8-hour workday would look like for your ears. Based on international NIOSH and OSHA safety standards β€” the same criteria used by occupational safety professionals worldwide. Octave Band Analyzer Real-time frequency breakdown across 10 octave bands. Don't just find out how loud it is β€” understand what's creating the noise. Low-frequency hum from machinery? High-frequency whistle from ventilation? Mid-frequency conversational chatter? Sondex shows it all. Session Recording and Waveform Record any environment and analyze it later. Scroll through the full audio waveform, zoom in on individual moments, and see exactly when noise levels spiked. Source Timeline Switch between the built-in microphone, Bluetooth devices, or external microphones during a session. Sondex logs which source was active at each moment β€” displayed as a clean interactive timeline. PDF Reports Every session can be exported as a detailed PDF report, including all measured parameters, location data, device information, time-based breakdowns, and automated recommendations. Microphone Calibration Manual or automatic offset correction. When measurement accuracy matters, you have full control. Microphone Health Assessment Sondex analyzes your microphone's performance during each session β€” detecting clipping, wind noise, self-noise levels, and frequency anomalies. Each session receives a health score from 0 to 100. Sondex is not a medical application and does not provide medical diagnoses or health advice. Privacy Policy: https://ios-dev-rv.github.io/pixaro-studio-website/apps/sondex-site/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Campus Command

Features
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Campus Command lets you control compatible network audio devices directly from your iPhone and iPad. Adjust and monitor volume across multiple audio zones and send live audio announcements - all through a fast and intuitive interface. You can also play your own tones and sounds from a tap-to-play sound board, and even record your own tones and messages right in the app. Designed for schools, businesses, and other places that use network audio, paging, or public address (PA) systems. Ideal for use as a wall-mounted audio controller or for quick access from a mobile device. Your announcements and tones reach a wide range of compatible devices over RTP or SIP. You can also set up your phone or tablet as a Local zone to play them through AirPlay, Bluetooth, and Google Castβ„’ speakers, headphones, or wired audio outputs. Remote volume control and monitoring are available with compatible Barix audio devices (see the supported models below). Features: β€’ Control and monitor volume across multiple audio zones β€’ Send live audio announcements β€’ Reach network speakers, IP phones, intercoms, and more β€’ Play tones and sounds from your own tap-to-play sound board β€’ Record your own tones and messages with the microphone β€’ Play announcements and tones through AirPlay, Bluetooth, and Google Cast speakers connected to your device β€’ Send announcements from the Apple Watch companion app β€’ Add multiple audio zones and paging receivers β€’ Receive in-app notifications when zones go offline β€’ Save connection settings for quick access β€’ Simple, responsive interface Compatible volume-control hardware (IP Audio Client firmware 2.12.0 or later): β€’ Exstreamer M400 β€’ Exstreamer MPA400 β€’ Exstreamer MR400 β€’ IP Former TPA400 β€’ Annuncicom MPI400 Note: The model list above applies to volume control and monitoring only. Live announcements and tones (RTP/SIP) work with those same models and a broad range of other standards-based receivers. Barix, Exstreamer, and Annuncicom are registered trademarks of Barix AG, Switzerland. Campus Command is an independent application and is not affiliated with or endorsed by Barix AG. All product names are referenced for compatibility and identification purposes only and remain the property of their respective owners. Google Cast is a trademark of Google LLC.

Screenshots

Decibel Sondex4 screens
Campus Command4 screens

Verdict

The call

The clearest difference is in-app purchases: Campus Command at none against Decibel Sondex's 9. Campus Command also leads on update cadence (weekly vs fortnightly) and device support (3 vs 1). On price, ads and iOS requirement 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. Decibel Sondex sells 9 in-app purchases, starting at $4.99 per 7 days. Campus Command asks for nothing beyond the download.

UpkeepUpdate frequency

Decibel Sondex ships an update fortnightly, Campus Command weekly. The most recent releases landed on October 29, 2026 and November 5, 2026 respectively.

Scorecard3 real differences Β· 3 level
Decibel Sondex versus Campus Command: the parameters behind the verdict, then further details
ParameterDecibel SondexCampus Command
PriceFreeFree
Update frequencyFortnightlyWeekly β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhoneiPhone, iPad, Apple Watch β€” better
Requires iOS18.617.0 β€” better
Further details β€” not scored
Size87 MB24 MB
Age rating12+4+
DeveloperPixaro StudioMatthew Notley

In-app purchases

9 purchases

Decibel Sondex

Subscriptions9
  • Standard Weekly Access3 Days trial$4.997 Days
  • Limited offer$8.991 Month
  • Standard Weekly Access3 Days trial$9.997 Days
Show 6 more
  • Standard Monthly Access$12.991 Month
  • PRO Monthly Access3 Days trial$19.991 Month
  • Standard Monthly Access$29.991 Month
  • Pro Monthly Access3 Days trial$39.991 Month
  • PRO Yearly Access$99.991 Year
  • Pro Yearly Access$399.991 Year
None

Campus Command

No in-app purchases

Questions

Is Decibel Sondex free?
Decibel Sondex is free to download, with in-app purchases available.
Is Campus Command free?
Campus Command is free to download, with no in-app purchases.
Do Decibel Sondex or Campus Command have ads?
Neither Decibel Sondex nor Campus Command shows ads.
Which is updated more often, Decibel Sondex or Campus Command?
Decibel Sondex ships an update fortnightly, and Campus Command weekly. Most recently, Decibel Sondex was updated on October 29, 2026 and Campus Command on November 5, 2026.

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