Go Button vs Smaart RTA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Go Button
This app provides professional audio playback for live events. Easily trigger music and sound effects simultaneously or in sequence. It offers advanced controls for volume, pan, speed, and pitch, with remote control options and robust file import capabilities.
- Play multiple sounds simultaneously
- Sequence sounds with a GO button
- Ad-libbed sound triggers
- Auto-stop, fade, loop, duck
- Independent cue controls
- Import audio files
- Remote control via Bluetooth/MIDI/OSC
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Easy sound playback for your live show! From the makers of QLab™. SIMPLE AND CONSISTENT - Incredibly easy to run your show - just press GO. - Play your music and sound effects at the same time. - Take your show anywhere! Runs on iPad, iPhone, and iPod touch. - Free to build 1 show. Unlock unlimited shows with a one-time In-App Purchase. USE IT FOR - Theater - Dance Recitals - Weddings - Church Services - Puppetry - Magic Shows SUPPORT - Friendly help when you need it! - Contact Support from the in-app sidebar, or email support@figure53.com. - Complete documentation online at gobutton.app/docs. NEWS AND UPDATES - groups.google.com/g/gobutton - twitter.com/gobuttonapp FEATURES • Play multiple sounds at the same time. • Play a list of sounds in sequence by tapping the "GO" button. • Play ad-libbed sounds with always-ready "Hit" buttons. • Auto-stop, fade in, fade out, loop, duck, and more. • Adjust volume, pan, speed, and pitch independently for every cue. • Import your audio files and share shows via AirDrop or the iOS Files app. • Remote control with Bluetooth and MIDI. • OSC control API for remote triggering from QLab or other OSC sources. • Passcode lock your shows to prevent unauthorized edits. • Ultra-efficient & low latency playback built on core iOS technologies. • Supports DRM-free WAV, AIFF, M4A, AAC, MP3, MOV, 3GP, CAF, and FLAC. • Requires iOS 15 or later. Produced by Figure 53.
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.
- 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
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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
Verdict
Go Button and Smaart RTA both sit at 4.6 stars, but that hides the real split: 89% of Go Button's written reviews are positive against 41% of Smaart RTA's. Smaart RTA's advantage is chart position (#189 vs unranked). On price, rating, ratings volume and update cadence 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
Both are free to download. Go Button sells 1 one-off in-app purchase 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.
Smaart RTA holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 174 and 490 respectively. Written reviews complicate that: 89% of Go Button's written reviews are positive against 41% of Smaart RTA's, so the app with the better star average is not the one people write more warmly about.
Go Button ships an update every 6 weeks, Smaart RTA every 2 months. Both last shipped on October 23, 2026.
| Parameter | Go Button | Smaart RTA |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (174 ratings) | 4.8 (490 ratings) — better |
| Positive reviews | 89.4% of reviews — better | 40.6% of reviews |
| Number of ratings | 174 | 490 — better |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | #189 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 15 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Figure 53 | Rational Acoustics LLC |
Customer experience
Go Button
Smaart RTA
In-app purchases
Go Button
- Pro License$99.99
Smaart RTA
- 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
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- Smaart RTA Pro - Annual7 Days trial$49.991 Year
- Smaart RTA - Lifetime$59.99
- Smaart RTA Pro - Lifetime$149.99








