Comparison

ai.Audio Controller vs Decibel Meter Ultra

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

Head to head
About

ai.Audio Controller

Control your ROTEL audio system with precision. Adjust volume, tone, and input, and sync power across multiple devices. Offers fine-tuned sensitivity and safety features for an enhanced listening experience.

Highlights
  • Volume, balance, and tone control
  • Sync power and dimming
  • Configurable max volume limit
  • Alternative button mode with haptic feedback
  • Multichannel/surround setup support
  • Automatic device detection
  • Widgets for scenes and monitoring
Features
Read full description

Audio Controller for ROTEL®. Control that matches your passion for sound. Please note: ROTEL® is a registered trademark. This app is an independent work and not affiliated with or endorsed by ROTEL®. Take charge of your ROTEL® system with an app designed for serious listeners. From effortless volume and input control to fine‑tuned balance and tone adjustments, Audio Controller puts precision in your pocket or wrist. Now you can sync power and dim up to three additional devices with your main unit, set safe volume limit to protect your gear and ears, and enjoy smoother response with alternative button controls and haptic feedback. Whether it’s stereo purity or multichannel immersion, your system has never been easier to command. Why you’ll love it: - Control your ROTEL pre/amp from iPhone, iPad, or Apple Watch - Sync power and dimming across multiple devices - Fine‑grade sensitivity for volume, balance, and tone - Configurable max volume for safe listening - Alternative button mode with haptic feedback - Expanded support for multichannel/surround setups - Automatic detection and quick setup - Widgets for scenes and monitoring Upgrade from the free version to unlock full functionality and experience your system without limits. Free version limitations (removable via in‑app purchase): - Inputs revert after 2 seconds - Volume capped at 14 - Bass/treble limited to ±3 - Speaker B can only be deactivated - Dimmer limited to level 3 - Transport controls emit STOP command Applied Standard Apple Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Decibel Meter Ultra

Measure, record, and analyze sound levels in your environment. This app offers precision metering, noise elimination tools, hearing protection features, and home audio calibration. It provides detailed reports and can be used with device microphones or external ones.

Highlights
  • Precision sound level metering
  • Noise logging and reporting
  • Hearing protection dosimeter
  • Fractional octave band analysis
  • Real-time analyzer
  • External microphone support
Features
Read full description

Measure, record and track sound levels in your environment with Decibel Meter Ultra, the all-in-one sound level meter, dosimeter and real-time analyzer. From monitoring sound levels at home, noise levels in the workplace, to calibrating the speakers of your hi-fi, Decibel Meter Ultra makes it easy to get the information that you need. Precision Metering For Sound: Get accurate sound level readings using industry standard measurement methodologies, selectable A, C and Z frequency weighting curves, fast and slow time-weightings, plus concurrent peak level measurement. Choose from the built-in microphones on your device or connect an external microphone* for an even broader dynamic range. Eliminate Nuisance Noise: Getting proof is as simple as tapping a button. Catch and log problem noise as it occurs. Overlay live video with sound levels, or create comprehensive acoustic analysis reports that you can share easily via PDF. Visualize sound levels over time and gather the evidence that you need to take decisive action. Safeguard Your Hearing: Stay aware of noise levels in the workplace and compare against industry-mandated safe levels using the built-in dosimeter. Select from default measurement profiles based on published recommendations from NIOSH and OSHA, or if you’re working against a different specification, create your own. Elevate Your Home Audio: Get the best from your home audio system with powerful fractional octave band analysis. Fine-tune your equipment using up to twelfth octave-band resolution, variable time weightings and peak level indicators so that you can enjoy music and movies like never before. Download now and take advantage of our free plan which includes our built-in metering profile and up to two-minute recording durations. Or choose one of our PRO plans and gain access to everything the app has to offer, including our full suite of professional metering options, custom meter profiles, analysis charts, PDF reports, background recording, unlimited recording durations and more. *External microphones require calibration against a reference sound level source The data provided by Decibel Meter Ultra is for educational and informational purposes only. Please refer to the disclaimer in the Terms of Use for further information. Terms of Use: https://decibelmeterultra.com/terms Privacy Policy: https://decibelmeterultra.com/privacy

Screenshots

ai.Audio Controller4 screens
Decibel Meter Ultra4 screens

Verdict

The call

The clearest difference is rating: Decibel Meter Ultra at 4.6 against ai.Audio Controller's 2.5. Decibel Meter Ultra also leads on update cadence (every 10 days vs every 5 months) and ratings volume (2.6K vs 2). ai.Audio Controller's advantage is device support (3 vs 1). On price, ads, in-app purchases and monetization model 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. ai.Audio Controller sells 1 one-off in-app purchase and Decibel Meter Ultra sells 4 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Decibel Meter Ultra holds the better App Store score, 4.6 against 2.5. That said, the two scores are not equally well evidenced: Decibel Meter Ultra has 2.6K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

ai.Audio Controller ships an update every 5 months, Decibel Meter Ultra every 10 days. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
ai.Audio Controller versus Decibel Meter Ultra: the parameters behind the verdict, then further details
Parameterai.Audio ControllerDecibel Meter Ultra
PriceFreeFree
Rating2.5 (2 ratings)4.6 (2.6K ratings) — better
Positive reviews—43.3% of reviews
Number of ratings22.6K — better
Update frequencyEvery 5 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS18.0 — better18.6
Further details — not scored
Size9 MB92 MB
Age rating4++12
DeveloperNarcyz AdamusUltrafine

Bugs and requests

ai.Audio Controller

Not enough reviews yet to summarise bugs or requests.

Decibel Meter Ultra

Reported bugs

2 issues
  • Subscription charges continue after cancellation
  • Subscription cancellation page doesn't load

Requested features

2 requests
  • Lower subscription pricing
  • Improve subscription cancellation process

In-app purchases

1 purchases

ai.Audio Controller

One-time1
  • Full Functionality$14.99
4 purchases

Decibel Meter Ultra

Subscriptions4
  • PRO Access7 Days trial2 variants$7.997 Days
  • PRO Access2 variants$11.991 Month
  • PRO Access3 Days trial$39.991 Year
Show 1 more
  • PRO Access2 variants$39.991 Year

Questions

Is ai.Audio Controller free?
ai.Audio Controller is free to download, with in-app purchases available.
Is Decibel Meter Ultra free?
Decibel Meter Ultra is free to download, with in-app purchases available.
Which has better reviews, ai.Audio Controller or Decibel Meter Ultra?
Decibel Meter Ultra is rated higher. ai.Audio Controller averages 2.5 out of 5 from 2 ratings, while Decibel Meter Ultra averages 4.6 from 2.6K ratings.
Do ai.Audio Controller or Decibel Meter Ultra have ads?
Neither ai.Audio Controller nor Decibel Meter Ultra shows ads.
Which is updated more often, ai.Audio Controller or Decibel Meter Ultra?
ai.Audio Controller ships an update every 5 months, and Decibel Meter Ultra every 10 days. Most recently, ai.Audio Controller was updated on November 3, 2026 and Decibel Meter Ultra on November 3, 2026.

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