Audio Frequency Analyzer vs Noise Guru
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Audio Frequency Analyzer
This real-time audio analyzer measures and evaluates sound environments with 1/3 octave band frequency response and FFT analysis. It supports calibration for high accuracy and is suitable for various audio testing and tuning applications.
- Real-time frequency spectrum response measurement (1/3 octave, 30 bands)
- FFT Analyzer
- Observation frequency range: 20 - 23000 Hz
- Calibration function for high accuracy
- Supports built-in and external microphones
- Snapshot and averaging functions
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"Audio Frequency Analyzer" is a powerful real-time audio analyzer (RTA) app for iPhone. With its simple operation, you can easily measure and evaluate your sound environment. This app measures the frequency response in 30 split band scale of 1/3 octave in real time. It can also display the FFT analysis results. It supports calibration for 1/3-octave bands. By adjusting the characteristics to match not only the built-in microphone but also your external microphone, it achieves high measurement accuracy. "Audio Frequency Analyzer" can be used for various applications, including sound room tuning, speaker settings, audio equipment testing, stage setup measurement, sound mixing environment evaluation and noise environment investigation. Features: - Frequency spectrum response measurement of 1/3 octave unit, 30 bands. (OCT) - FFT Analyzer (FFT) - Observation frequency range: 20 - 23000 Hz - Logarithmic amplitude display. - Touch-scroll function to adjust visible amplitude ranges. - Display the measured value of 1/3 oct bands at OCT mode. (dB@OCT) - Function to change the graph slope at FFT mode. (Slope): -3dB/oct (less than 1kHz), +3dB/oct (1kHz or higher) - Peak hold function. (Hold) - Average display function. (Avg): Time linear averaging. Fast-2.56sec, Slow-12.8 sec - Display response control. (Fast/Slow) - Reset of Measurement display position. (Scroll) - Snapshot of Measurement display. (Snap) - Calibration function in OCT mode. (Calibrate): 1/3 octave band offset and total offset setting. - Supports built-in microphone, headset microphone, and external digital audio connection. Note: The first time you access your microphone and photos after installing the app, the iOS system will ask you for permission to access them. If you have not enabled this setting, the app will not be able to access them due to iOS system privacy restrictions. Please enable the access permission in the iOS setting "Settings > Privacy & Security > Photos or Microphone". Please visit our iOS app support page for more information about this app.
Noise Guru
Measure sound levels with precision to understand your environment and protect your hearing. Identify loud noises, monitor noise pollution, and find quiet spaces for recording. Features include a decibel dosimeter, background noise measurement, and geo-tagged recordings.
- Precise sound level metering (SPL)
- DB Dosimeter for noise exposure tracking
- Background noise measurement
- Noise pollution monitoring
- Geo-tagged noise recordings
- Unlimited recording duration
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Want to expose the absurd loudness of your pet's snoring? Need to find a quiet place to record, so your social media video doesn’t turn out to be muffled? Take control of your sound environment with ease with the ultimate tool for measuring decibels and taking control of your hearing health. With precise sound level metering, you can measure the sound pressure level (SPL) and choose your preferred display format. The app also allows you to measure pet snoring loudness and find a quiet recording spot for social media users and streams. Features: - Keep track of the noise you're exposed to with the DB Dosimeter, set acceptable noise standards and be informed if the noise level exceeds the typical threshold. - Measure noise in the background. - Monitor noise pollution with DB Dosimeter. - Overlay video with noise recordings and geo-tagged location. - Set your customized display options with video effects - Record without limits on duration. Don't risk damaging your hearing with prolonged exposure to constant daily noise. Take control of your hearing health with this app and protect your hearing for the long term. “[..] perhaps as many as 40 million adults (24 percent)—have features of their hearing test that suggest hearing loss in one or both ears from exposure to loud noise. Researchers have also estimated that as many as 17 percent of teens (ages 12 to 19) have features of their hearing test suggestive of NIHL in one or both ears” NIH report on noise-induced hearing loss, NIH Publication No. 14-4233, March 2014 Terms of Use: http://aserykh.com/decibel/terms-of-use Privacy Policy: http://aserykh.com/decibel/privacy-policy
Screenshots
Verdict
The clearest difference is price: Noise Guru at Free against Audio Frequency Analyzer's $9.99. Noise Guru also leads on rating (4.6 vs 3.7) and update cadence (monthly vs every 8 months). On ads, in-app purchases 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
Noise Guru is free to download; Audio Frequency Analyzer costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Noise Guru holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: Noise Guru has 360 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 60% of Audio Frequency Analyzer's written reviews are positive against 88% of Noise Guru's.
Audio Frequency Analyzer ships an update every 8 months, Noise Guru monthly. The most recent releases landed on October 26, 2026 and October 22, 2026 respectively.
| Parameter | Audio Frequency Analyzer | Noise Guru |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 3.7 (3 ratings) | 4.6 (360 ratings) — better |
| Positive reviews | 60.0% of reviews | 88.3% of reviews — better |
| Number of ratings | 3 | 360 — better |
| Update frequency | Every 8 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 26.2 | 14.0 — better |
| Further details — not scored | ||
| Size | 0 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | TOON,LLC | Andrei Serykh |
Customer experience
Audio Frequency Analyzer
Noise Guru
Bugs and requests
Audio Frequency Analyzer
Not enough reviews yet to summarise bugs or requests.
Noise Guru
Reported bugs
2 issues- Forced to leave a review to use the app
- Can't delete max values
Requested features
2 requests- Add frequency meter
- Add option to reset max/min values
In-app purchases
Audio Frequency Analyzer
No in-app purchases
Noise Guru
No in-app purchases
Questions
Is Audio Frequency Analyzer free?
Is Noise Guru free?
Which has better reviews, Audio Frequency Analyzer or Noise Guru?
Do Audio Frequency Analyzer or Noise Guru have ads?
Which is updated more often, Audio Frequency Analyzer or Noise Guru?
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