Comparison

Spectrum Analyzer vs Smaart RTA

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

Smaart RTA

Analyze audio in real time with professional-grade tools. Visualize frequency content, manage feedback, and monitor sound pressure levels with precision and ease, all from your mobile device.

Highlights
  • Professional RTA graph with averaging options
  • Spectrograph for feedback and frequency management
  • SPL meter with A & C weighting
  • Adjustable RTA graph settings
  • Plot calibrated levels
  • Target curves
Read full description

Professionals and enthusiasts alike can now access Smaart’s Real Time Analyzer, beautifully rendered Spectrograph, and crystal clear SPL meter without needing to set up a dedicated personal computer to run a desktop version of Smaart*. Smaart RTA is capable of the same accuracy, precision, and ease of use enjoyed by live sound engineers and FOH professionals across the world using the same underlying algorithms as its desktop siblings*, trusted by sound engineers to deliver accurate and actionable data in real time. *PLEASE READ Smaart RTA creates single channel measurements only. It does not support the dual channel transfer function measurements or impulse response measurements used for system alignment and optimization, including time alignment. -- SMAART RTA INCLUDES -- -PROFESSIONAL STANDARD RTA (REAL TIME ANALYZER) GRAPH- The RTA display helps engineers ensure an audio mix or playback balance aligns with the desired tonal response for a specific artist, performance, or specification – providing real-time analysis of frequency content and confidence that you are hearing what you are seeing. Features include: Fast, Slow, None averaging options for graph response ballistics. 1/48, 1/24, 1/12, 1/6, 1/3, 1oct Banding for precision frequency resolution. 1/3 octave x-axis frequency scale for intuitively identifying center frequencies and trends. -BEATIFULLY RENDERED SPECTROGRAPH- The Spectrograph is essential for managing and controlling feedback and identifying problem frequencies, allowing engineers to quickly visualize and address potential issues before they interfere with a performance. Features include: Adjustable dynamic thresholds to customize the amplitude levels represented by the spectrograph. 1000 slices in history, allowing you to ‘rewind’ the display to view events that already happened. Intuitive color palette to represent amplitude level (dark to bright, quiet to loud). -CLEAR SPL DISPLAY WITH DB LEVEL METER- The SPL view helps you ensure audio levels remain consistent from one show to the next or check levels for uniformity across various locations within a venue. Features include: Standard SPL metrics of A & C weighting, with fast and slow response times. NIOSH and OSHA exposure percentages correspond with nationally accepted U.S. recommendations and occupational health and safety guidelines. Large Level Meter display for distant viewing. The default settings for all functions in Smaart RTA mirror those in the desktop version of Smaart v9’s real time single channel measurements. -- ADDITIONAL SMAART RTA PRO FEATURES -- Smaart RTA Pro includes the functionality of Smaart RTA and unlocks all settings and advanced features, including: Adjustable RTA Graph Settings (frequency scaling, bars/lines, line thickness, grid interval, etc) Plot Calibrated Levels to view the RTA graph relative to SPL, rather than Full Scale level only. Target Curves (Cinema X Curves included, or import your own). Capture and store RTA data traces, allowing you to compare multiple responses across different locations or venues. Average multiple stored RTA data traces to view a spatially averaged frequency response. Adjustable RTA graph Y-offsets to apply a visual dB offset to live or captured data. Import/Export RTA files (.srf) to and from Smaart desktop. Additional SPL Traffic Light display for staying within venue SPL Limits. Internal and external microphone calibration for SPL. Due to Apple's distribution policies, free trials require a subscription selection. If you would like to try Smaart RTA before you buy, start with a subscription, then cancel it to avoid billing. Smaart RTA is $1.99p/m, $19.99p/y, or $59.99 Lifetime Smaart RTA Pro is $4.99p/m, $49.99p/y or $149 Lifetime Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.rationalacoustics.com/pages/smaart-mobile-apps-privacy-policy-terms-condtions

Screenshots

Spectrum Analyzer3 screens
Smaart RTA4 screens

Verdict

The call

The clearest difference is rating: Smaart RTA at 4.8 against Spectrum Analyzer's 4.2. Smaart RTA also leads on review sentiment (41% vs 5%) and ads (none vs shown). Spectrum Analyzer's advantage is update cadence (fortnightly vs every 2 months). On price, ratings volume, 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. Spectrum Analyzer sells 13 in-app purchases, starting at $4.99 per 7 days and Smaart RTA sells 6 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Smaart RTA holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 198 and 429 respectively. Written reviews point the same way: 5% of Spectrum Analyzer's written reviews are positive against 41% of Smaart RTA's.

UpkeepUpdate frequency

Spectrum Analyzer ships an update fortnightly, Smaart RTA every 2 months. Both last shipped on October 14, 2026.

Scorecard4 real differences · 6 level
Spectrum Analyzer versus Smaart RTA: the parameters behind the verdict, then further details
ParameterSpectrum AnalyzerSmaart RTA
PriceFreeFree
Rating4.2 (198 ratings)4.8 (429 ratings) — better
Positive reviews5.0% of reviews40.6% of reviews — better
Number of ratings198429 — better
Update frequencyFortnightly — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size100 MB11 MB
Age rating4+4+
DeveloperMusic BreathRational Acoustics LLC

Customer experience

Spectrum Analyzer

All ratings198 ratings
Positive77.3%
Neutral6.6%
Negative16.2%
Written reviews241 reviews
Positive5.0%
Neutral5.0%
Negative90.0%

Smaart RTA

All ratings429 ratings
Positive95.3%
Neutral1.4%
Negative3.3%
Written reviews32 reviews
Positive40.6%
Neutral15.6%
Negative43.8%

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

Smaart RTA

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
6 purchases

Smaart RTA

Subscriptions4
  • Smaart RTA - Monthly7 Days trial$1.991 Month
  • Smaart RTA Pro - Monthly7 Days trial$4.991 Month
  • Smaart RTA - Annual7 Days trial$19.991 Year
Show 1 more
  • Smaart RTA Pro - Annual7 Days trial$49.991 Year
One-time2
  • Smaart RTA - Lifetime$59.99
  • Smaart RTA Pro - Lifetime$149.99

Questions

Is Spectrum Analyzer free?
Spectrum Analyzer is free to download, with in-app purchases available.
Is Smaart RTA free?
Smaart RTA is free to download, with in-app purchases available.
Which has better reviews, Spectrum Analyzer or Smaart RTA?
Smaart RTA is rated higher. Spectrum Analyzer averages 4.2 out of 5 from 198 ratings, while Smaart RTA averages 4.8 from 429 ratings.
Do Spectrum Analyzer or Smaart RTA have ads?
Spectrum Analyzer shows ads; Smaart RTA does not.
Which is updated more often, Spectrum Analyzer or Smaart RTA?
Spectrum Analyzer ships an update fortnightly, and Smaart RTA every 2 months. Most recently, Spectrum Analyzer was updated on October 14, 2026 and Smaart RTA on October 14, 2026.

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