Comparison

Smaart RTA vs Feedback Trainer

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

Head to head
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
Currently charting
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

About

Feedback Trainer

Features
Read full description

A frequency ear training app for PA engineers and audio professionals. The ability to quickly identify problem frequencies that cause feedback is a skill built through experience. Train your ears with this app and sharpen your instincts for the stage and studio. Features Visual learning with a 31-band graphic EQ display Two modes: Phone-Friendly (100Hz–16kHz) and Full Range for external speakers (40Hz–16kHz) Hint mode for beginners Track your accuracy and progress history Available in Japanese, English, Chinese, French, and Spanish

Screenshots

Smaart RTA4 screens
Feedback Trainer4 screens

Verdict

The call

The clearest difference is in-app purchases: Feedback Trainer at none against Smaart RTA's 6. Feedback Trainer also leads on update cadence (every 2 weeks vs every 2 months). Smaart RTA's advantage is ads (none vs shown) and chart position (#135 vs unranked). On price, 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. Smaart RTA sells 6 in-app purchases, starting at $1.99 per month. Feedback Trainer asks for nothing beyond the download.

UpkeepUpdate frequency

Smaart RTA ships an update every 2 months, Feedback Trainer every 2 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 7 level
Smaart RTA versus Feedback Trainer: the parameters behind the verdict, then further details
ParameterSmaart RTAFeedback Trainer
PriceFreeFree
Rating4.8 (497 ratings) — better—
Positive reviews40.6% of reviews—
Number of ratings497 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#135 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.6
Further details — not scored
Size11 MB4 MB
Age rating4+4+
DeveloperRational Acoustics LLCShunsuke Takasu

In-app purchases

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
None

Feedback Trainer

No in-app purchases

Questions

Is Smaart RTA free?
Smaart RTA is free to download, with in-app purchases available.
Is Feedback Trainer free?
Feedback Trainer is free to download, with no in-app purchases.
Do Smaart RTA or Feedback Trainer have ads?
Feedback Trainer shows ads; Smaart RTA does not.
Which is updated more often, Smaart RTA or Feedback Trainer?
Smaart RTA ships an update every 2 months, and Feedback Trainer every 2 weeks. Most recently, Smaart RTA was updated on October 30, 2026 and Feedback Trainer on October 24, 2026.

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