AudioTools, dB, Sound & Audio vs Spectrum Analyzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AudioTools, dB, Sound & Audio
This professional audio analysis app offers a comprehensive suite of tools for acoustic measurements, including SPL, RTA, and FFT. It calibrates device microphones for accurate results and allows for the addition of powerful optional modules for advanced analysis.
- SPL Meter with A/C weighting
- Real Time Analyzer (RTA)
- Fast Fourier Transform (FFT) analysis
- Speaker Polarity Test
- Audio Oscilloscope
- Signal Generator
- Audio Recorder
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AudioTools from Studio Six Digital is a suite of professional-grade audio and acoustic analysis apps. Included in the price of this app is a great collection of professional tools -- SPL, RTA, FFT, Speaker Polarity Test, Generator, Audio Scope, CLF Viewer, and Recorder, and the framework to add more powerful modules as you need them. Customize AudioTools for your needs by buying any of the additional optional modules, like Smaart Tools I, SPL Graph, or Impulse Response, at any time right from your iOS device. We test every iOS device and calibrate the microphone level and frequency response for the best results. We have the ability to turn off the Apple low frequency filters, and on many devices we can measure up to 120 dB SPL. Add iTestMic, iPrecisionMic, or iAudioInterface2 for a complete professional audio and acoustic test and measurement platform. Actual reviews: “...AudioTools is a “how did I ever live without it” app”. “I think this application is the best I EVER purchased.” “I have used many thousands of dollars of complicated test equipment that doesn’t measure up to this app suite.” ***** Included in the app price ***** * SPL Meter A faithful reproduction of a classic analog SPL meter. Includes A and C weighting, and Fast and Slow ANSI decay modes. All filters meet or exceed ANSI type 1. * RTA A 1/3 and octave band Real Time Analyzer. Includes touch-GUI range control, a cursor, max/min bars, and noise curve overlays. * FFT Detailed acoustic analysis, up to 32876 points. View full detail or smooth to 1/24, 1/6, 1/3 or octave. Includes cursor, scalable graphics, and peak tracking. * Polarity Speaker polarity checker. Route the test signal to a speaker, and read the polarity of the speaker on the screen. * CLF Viewer Show loudspeaker data, including plots for impedance, axial response, sensitivity, polar response, and 6dB coverage, and a 3D color balloon plot. * Delay Finder Measures the time it takes for a pulse to return from a speaker. * Generator Generates sine waves, square waves, white and pink noise. * Line Level Tests A line level measurement function and frequency counter. * Audio Scope A dual-channel audio oscilloscope that includes auto-triggering, variable gain and sweep rate, and storage of scope images. * Recorder A mono/stereo audio recorder with WAV and compressed formats and 8k-48k sample rate. Transfer files via WIFI. * File transfer of results via wifi to PC / Mac. * Audio Calculators ***** Optional modules available for purchase from within AudioTools ***** * SoundScope VR - FFT-based audio analyzer with VR. The powerful acoustical analysis module. Includes RTA graphs to 1/48th octave and Spectrograph, and can display VR. * Transfer Function -- Requires 2-channel interface. Two-channel FFT-based measurement. Allows you to analyze sound system performance with music or pink noise as the signal source. * ETC Energy Time Curve. Plot decay of an impulse over time, and compute RT60 time. Internal or External trigger. * Impulse Response Record and analyze an impulse or sine sweep, compute octave and 1/3 octave ETC, T30, C50, C80, CT, Definition. * LARSA Fast and accurate sine-sweep measurement of loudspeakers and rooms. * SPL Pro Digital SPL meter with ANSI Slow, Fast, Peak, and Impulse mode, along with LEQ. Includes A and C weighting, and all 10 octave band filters. * SPL Graph Plot second-by-second SPL level for up to 24 hours, and optionally record the audio. Also, add the optional Octave Band Logging upgrade to elevate this tool to rival any professional logging SPL Meter. * SPL Traffic Light Monitor live sound levels SPL and Leq and see status in a simple green-yellow-red display. * STIPA Speech Intelligibility Meets the current NFPA code standards for testing evac systems and schools. * Speaker Distortion Measure THD+n of any driver. * THD+n (requires iAudioInterface) * Impedance Meter and Plot (requires iAudioInterface) * Phase Meter * Amplitude Sweep
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.
- Sound level meter
- Multichannel harmonic analysis
- Adjustable graphics
- AI-powered sound source analyzer
- Real-time analysis
- FFT analysis
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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
Screenshots
Verdict
The clearest difference is review sentiment: AudioTools, dB, Sound & Audio at 75% against Spectrum Analyzer's 5%. AudioTools, dB, Sound & Audio also leads on rating (4.8 vs 4.2) and ads (none vs shown). Spectrum Analyzer's advantage is price (Free vs $19.99). On update cadence, in-app purchases, monetization model and device support 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
Spectrum Analyzer is free to download; AudioTools, dB, Sound & Audio costs $19.99 up front. AudioTools, dB, Sound & Audio sells 11 in-app purchases, starting at $9.99 per month and Spectrum Analyzer sells 13 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
AudioTools, dB, Sound & Audio holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: AudioTools, dB, Sound & Audio has 5.1K ratings behind it against 197, so its average is the more settled of the two. Written reviews point the same way: 75% of AudioTools, dB, Sound & Audio's written reviews are positive against 5% of Spectrum Analyzer's.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.
| Parameter | AudioTools, dB, Sound & Audio | Spectrum Analyzer |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | 4.8 (5.1K ratings) — better | 4.2 (197 ratings) |
| Positive reviews | 74.8% of reviews — better | 5.0% of reviews |
| Number of ratings | 5.1K — better | 197 |
| Update frequency | Fortnightly | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | #33 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 94 MB | 132 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Smith | Music Breath |
Customer experience
AudioTools, dB, Sound & Audio
Spectrum Analyzer
User reviews
AudioTools, dB, Sound & Audio
From 5.1K App Store ratingsWhat we love
- 👍 Useful audio tools
- 🚀 Regularly updated
- 💡 Industry-standard features
- 👍 Accurate measurements
- 👍 Great support
Room to improve
- 🔒 Many features locked behind paywall
- 🐛 Buggy iOS port
- 🔒 Expensive in-app purchases
- 🐛 Inconsistent functionality
- 🐛 Microphone issues
Spectrum Analyzer
From 197 App Store ratingsWhat we love
- ✅ Accurate frequency identification
- ✅ Clear and easy-to-read display
- ✅ Useful noise floor setup feature
- ✅ Works well when ads are removed
Room to improve
- 💰 Extremely aggressive monetization strategy
- 📢 Excessive and intrusive ads
- 🔊 Loud ads that ignore device mute settings
- 🚫 Requires subscription/payment to access core features
- 😤 Deceptive purchase practices and accidental charges
Bugs and requests
AudioTools, dB, Sound & Audio
Reported bugs
3 issues- Crashes on launch
- Inaccurate SPL and frequency measurements
- Compatibility issues with iOS updates
Requested features
4 requests- Add manual
- Improve file export and sharing
- Improve user interface
- Add support for external microphones
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
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- 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
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- Dark mode option
- Upfront pricing disclosure before download
In-app purchases
AudioTools, dB, Sound & Audio
- All-In Module Access7 Days trial$9.991 Month
- VU Meter$2.99
- Polarity Test Module$3.99
- ETC Module$5.99
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- Speaker Distortion$5.99
- SPL Pro Module$7.99
- SPL Graph Module$9.99
- SPL Traffic Light$9.99
- SoundScope VR$24.99
- LARSA$29.99
- IR Module$49.99
Spectrum Analyzer
- Pitch Finder: Audio Visualizer3 Days trial$4.997 Days
- Pitch Finder: Audio Visualizer3 Days trial$9.991 Month
- One Month Sale$9.991 Month
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- 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
- No Ads$9.99
- Additional Settings Controls$15.99
- Full Pack + No Ads$19.99
Show 1 moreShow fewer
- Get More$19.99
Questions
Is AudioTools, dB, Sound & Audio free?
Is Spectrum Analyzer free?
Which has better reviews, AudioTools, dB, Sound & Audio or Spectrum Analyzer?
Do AudioTools, dB, Sound & Audio or Spectrum Analyzer have ads?
Which is updated more often, AudioTools, dB, Sound & Audio or Spectrum Analyzer?
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