Comparison

Spectrum Analyzer vs Qu

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

Head to head
About

Spectrum Analyzer

Visualize audio frequencies with real-time analysis. Features include a sound level meter, multichannel harmonic analysis, and adjustable graphical representations. Gain insights into your sound environment with advanced tools.

Highlights
  • Sound level meter
  • Multichannel harmonic analysis
  • Adjustable graphics
  • AI-powered sound source analyzer
  • Real-time analysis
  • FFT analysis
Features
Read full description

Spectrum Analyzer is a pro audio tool with sound level meter, multichannel harmonic analysis and detailed graphical representation. Learn something new about your sound environment with real-time analysis! FEATURES: - sound level meter; - harmonic analyzer; - adjustable graphics; - AI-powered sound source analyzer. SOUND LEVEL METER - precise measurement of sound and noise level - real-time results HARMONIC ANALYZER - multichannel FFT analysis; - adjustable parameters; - graphical representation. ADJUSTABLE GRAPHICS - various graphics and diagram types; - zoom of selected chart areas. This app offers subscriptions. The paid version includes AI noise detection, immersive 3D visualization, and customizable settings. The free version offers dB/Hz measurement, 2D mode, and limited visualization options. Privacy Policy: https://musicbreath.com/privacy Terms Of Use: https://musicbreath.com/tos

About

Qu

This app offers wireless mobile control for specific digital mixing consoles. It allows non-technical users to adjust essential parameters like levels and mutes, simplifying audio management for various applications.

Highlights
  • Wireless control for Qu mixers
  • Adjust input and master faders
  • Control mutes and mute groups
  • Manage send and group levels
  • Configure softkeys
  • Simultaneous iOS device support
Features
Read full description

Qu-Control release V1.93 for iOS devices. This version is for Qu mixers running V1.9* firmware. Qu-Control provides wireless mobile control for an Allen & Heath Qu digital mixing console.With simple configuration and set-up, it gives focused control of Qu consoles to those who only need access to some parameters, e.g. levels or mutes. Qu-Control works simultaneously with Qu-Pad and the Qu mixing consoles.Complex set-up of routing, levels and processing are carried out within the mixing console or Qu-Pad by an experienced user, then Qu-Control can be configured and used by non-technical users or when only a few parameters require adjustment. Typical applications include simple source selection to more complex venue audio management.Qu-Control can also be used to control send levels to a single mix for monitoring, recording or live streaming. The Qu range supports simultaneous connection of up to 8 iOS devices with up to two of these running Qu-Pad (for complete control of the mixer) and the rest running Qu-Control or Qu-You apps, all of which are available free from the Apple Store. Qu-Control allows for the following to be controlled in any Qu mixer: - Input Faders - LR On/Off buttons - LR On/Off Radio buttons - Master Faders - Input Mutes - Master Mutes - Mute Groups - Send Levels - Send On/Off buttons - Send On/Off Radio buttons - Group Send Levels - Group On/Off buttons - Group On/Off Radio buttons - Matrix Send Levels (not available for Qu-16) - Matrix Send On/Off buttons - Matrix Send On/Off Radio buttons - Softkeys Requirements: An Allen & Heath Qu-16, Qu-24, Qu-32, Qu-Pac or Qu-SB mixing console running V1.9* version firmware, with a suitable wireless router (wireless access point) connected to its Network port. The Qu mixer firmware and Qu-Control app maintenance version numbers ‘*’ do not need to be identical, for example Qu-Control V1.92 will work with Qu mixer V1.94. Refer to the Allen & Heath web site for more information and to download the latest Qu mixer firmware.

Screenshots

Spectrum Analyzer3 screens
Qu4 screens

Verdict

The call

The clearest difference is rating: Spectrum Analyzer at 4.2 against Qu's 2.4. Spectrum Analyzer also leads on update cadence (fortnightly vs every 47 months) and ratings volume (197 vs 8). Qu's advantage is in-app purchases (none vs 13) and ads (none vs shown). On price, review sentiment, device support 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. Spectrum Analyzer sells 13 in-app purchases, starting at $4.99 per 7 days. Qu asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spectrum Analyzer holds the better App Store score, 4.2 against 2.4. That said, the two scores are not equally well evidenced: Spectrum Analyzer has 197 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 5% of Spectrum Analyzer's written reviews are positive against 0% of Qu's.

UpkeepUpdate frequency

Spectrum Analyzer ships an update fortnightly, Qu every 47 months. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.

Scorecard6 real differences · 4 level
Spectrum Analyzer versus Qu: the parameters behind the verdict, then further details
ParameterSpectrum AnalyzerQu
PriceFreeFree
Rating4.2 (197 ratings) — better2.4 (8 ratings)
Positive reviews5.0% of reviews — better0.0% of reviews
Number of ratings197 — better8
Update frequencyFortnightly — betterEvery 47 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.6 — better
Further details — not scored
Size132 MB2 MB
Age rating4+4+
DeveloperMusic BreathAllen & Heath Limited

Customer experience

Spectrum Analyzer

All ratings197 ratings
Positive77.2%
Neutral6.6%
Negative16.2%
Written reviews241 reviews
Positive5.0%
Neutral5.0%
Negative90.0%

Qu

All ratings8 ratings
Positive37.5%
Neutral0.0%
Negative62.5%
Written reviews7 reviews
Positive0.0%
Neutral28.6%
Negative71.4%

Bugs and requests

Spectrum Analyzer

Reported bugs

10 issues
  • App becomes unusable after iOS 16 update
  • Crashes immediately on iPhone 5 with iOS 7
  • Cannot exit app on iPhone X without reboot
  • App freezes when changing settings or views
  • Inaccurate frequency readings
Show 5 more
  • Slow and unresponsive performance
  • App hijacks device sound settings
  • Accidental in-app purchases triggered by home button
  • Subscription charges without clear user consent
  • App locks users into year-long subscriptions with no cancellation option

Requested features

7 requests
  • Audio file import functionality
  • Customizable background colors for chroma key compatibility
  • Ability to record audio instead of only analyzing
  • Better documentation and help files
  • Improved sensitivity for detecting soft sounds
Show 2 more
  • Dark mode option
  • Upfront pricing disclosure before download

Qu

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

Spectrum Analyzer

Subscriptions9
  • Pitch Finder: Audio Visualizer3 Days trial$4.997 Days
  • Pitch Finder: Audio Visualizer3 Days trial$9.991 Month
  • One Month Sale$9.991 Month
Show 6 more
  • 1 Week Subscription3 Days trial$9.997 Days
  • 1 Year Sub. with discount$19.991 Year
  • 1 Month Subscription$19.991 Month
  • 3 Month Subscription$25.993 Months
  • 1 Year Subscription3 Days trial$39.991 Year
  • 2 months subscription3 Days trial$39.992 Months
One-time4
  • No Ads$9.99
  • Additional Settings Controls$15.99
  • Full Pack + No Ads$19.99
Show 1 more
  • Get More$19.99
None

Qu

No in-app purchases

Questions

Is Spectrum Analyzer free?
Spectrum Analyzer is free to download, with in-app purchases available.
Is Qu free?
Qu is free to download, with no in-app purchases.
Which has better reviews, Spectrum Analyzer or Qu?
Spectrum Analyzer is rated higher. Spectrum Analyzer averages 4.2 out of 5 from 197 ratings, while Qu averages 2.4 from 8 ratings.
Do Spectrum Analyzer or Qu have ads?
Spectrum Analyzer shows ads; Qu does not.
Which is updated more often, Spectrum Analyzer or Qu?
Spectrum Analyzer ships an update fortnightly, and Qu every 47 months. Most recently, Spectrum Analyzer was updated on September 24, 2026 and Qu on September 19, 2026.

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