Comparison

Audio Spectrum Analyzer Pro vs Oscilloscope & Spectrogram

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

Head to head
About

Audio Spectrum Analyzer Pro

Analyze sound frequencies in real-time with this powerful tool. It offers detailed octave band analysis, FFT plots, and various measurement scales. Supports multiple microphones and noise analysis features for accurate audio insights.

Highlights
  • Octave Band Real Time Analyzer
  • FFT Plot (Fast Fourier Transform)
  • Sound level meter (dB meter)
  • Noise Rating and Noise Criterion support
  • Support for external microphones
  • Pre-calibrated mic profiles
Features
Read full description

Audio Spectrum Analyzer is a powerful real-time audio analysis app. Full of features yet very simple to use. Sound level meter (db meter a-weighted, noise rating, noise criterion) included. Feature Highlights: • Octave Band Real Time Analyzer • FFT Plot (Fast Fourier Transform) • Linear and logarithm scales • Up to 16384 FFT size • A lot of available window functions • Tracking for max value • Max and Min for any selected frequency • Stunned graphics • Reliable measurement accuracy with pre-calibrated profiles for 3 device-integrated mics • Additional precision with integrated support and pre-calibrated profiles for AirPods, AirPods Pro • Safer measurements using the Airpods Pro noise cancellation feature • Support for external microphones (wired or via Bluetooth) • Noise Rating and Noise Criterion support And many many more... Terms of Use: https://www.iubenda.com/terms-and-conditions/94359518

About

Oscilloscope & Spectrogram

Analyze audio in real-time with detailed oscilloscope and spectrogram views. Pause, scroll, and zoom to precisely identify frequencies, notes, and sound events. Offers advanced triggering and a unique Bark-frequency scale for detailed analysis.

Highlights
  • Real-time oscilloscope and spectrogram
  • Pause and scroll audio history
  • Pinch-to-zoom functionality
  • Frequency and MIDI note identification
  • Stereo and mono views
  • Trigger with lookahead
Features
Currently charting
Read full description

OSCILLOSCOPE & SPECTROGRAM is a powerful audio analyzer app and audio unit plugin KEY FEATURES - Run as both Audio Unit and standalone app - View up to three seconds of audio on the screen - Pause and scroll horizontally to browse back in time - Pinch to zoom in / zoom out - See both oscilloscope and spectrogram separately or overlayed together - Frequency trigger mode helps identify the precise frequency and MIDI note of sounds in the spectrogram - Stereo and mono views - Level based trigger mode has lookahead, pause, and zoom - XY mode shows stereo correlation - Automatically adjusts FFT size to fit zoom setting - Bark-frequency scale spectrogram shows nice detail at low and high frequencies - When zoomed in, the oscilloscope uses sinc upsampling to show you a close approximation of what actually outputs from your audio interface after digital to analog conversion, rather than just displaying raw audio samples. WHAT DOES THIS APP DO THAT OTHERS DO NOT? 1. Pause Button We can't emphasize enough how useful this is. You never have to worry about trying to catch short events that disappear quickly because you can watch the sounds go by slowly at a 3 second viewer scale, then just pause and scroll back if you missed something. When you get to the event you want to see you can pinch to zoom in right down to sub-sample level of detail, then zoom back out when you are done and zoom in on something else. This feature alone makes almost all other oscilloscope apps unnecessary because it means you can easily see ANYTHING that you need to see. 2. Frequency Identification Mode In frequency mode, when you touch the frequency scale on the right of the screen a blue line appears on the spectrogram. When you position the line above a specific frequency on the spectrogram, a panel on the left side of the screen displays the octave, note name, and MIDI number. You can then use the frequency timing oscilloscope to lock in on the exact pitch in cents so that you not only know which MIDI note that sound corresponds to but you know exactly how many cents sharp or flat. The ability to simultaneously see the frequency on the spectrogram and confirm it with precision on the oscilloscope allows you to quickly and easily identify musical pitches to a level of accuracy that have not seen anywhere else, not even in desktop software. 3. Trigger with Lookahead Almost every oscilloscope has a feature where it re-draws the screen each time the input signal level crosses a specified threshold. This is the main and most basic function of any oscilloscope. However, when setting the trigger at a high level to view the attack section of musical notes or drums, we miss the first part of the note. By using lookahead, this app allows you to see a few milliseconds BEFORE the trigger point so that you can see the whole sound you want to examine. 4. Carefully Designed Spectrogram In all spectrum analyzer displays, the upper end of the frequency scale is crowded, meaning that a single pixel corresponds to 10 or 20 frequencies in the frequency analysis. In many other analyzer apps one of two things occur: either 9 out of 10 frequencies in that upper range simply get ignored and disappear from the spectrogram display, or all 10 frequencies combine together to make the pixels in the upper range appear brighter than low frequency sounds of similar volume. This may seem like a technicality until you run a sine sweep or a 20 KHz tone through the analyzer and find that large sections of the input simply aren't displayed on the analyzer screen. Looking at these kinds of test signals on a spectrogram is the primary way that we test and evaluate the quality of audio effect plugins. If a spectrogram is to be of any real use as an analysis tool, it should do this right. Other spectrograms often mess up the lower frequencies too, either by making them take up too much space or by making them very pixelated. This spectrogram carefully avoids these problems.

Screenshots

Audio Spectrum Analyzer Pro4 screens
Oscilloscope & Spectrogram4 screens

Verdict

The call

The clearest difference is price: Audio Spectrum Analyzer Pro at Free against Oscilloscope & Spectrogram's $5.99. Audio Spectrum Analyzer Pro also leads on ratings volume (238 vs 28). Oscilloscope & Spectrogram's advantage is in-app purchases (none vs 2) and update cadence (every 4 days vs every 7 months). On rating, ads, 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

Audio Spectrum Analyzer Pro is free to download; Oscilloscope & Spectrogram costs $5.99 up front. Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year. Oscilloscope & Spectrogram asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Oscilloscope & Spectrogram holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer Pro has 238 ratings behind it against 28, so its average is the more settled of the two. Written reviews point the same way: 57% of Audio Spectrum Analyzer Pro's written reviews are positive against 70% of Oscilloscope & Spectrogram's.

UpkeepUpdate frequency

Audio Spectrum Analyzer Pro ships an update every 7 months, Oscilloscope & Spectrogram every 4 days. The most recent releases landed on September 24, 2026 and September 17, 2026 respectively.

Scorecard7 real differences · 4 level
Audio Spectrum Analyzer Pro versus Oscilloscope & Spectrogram: the parameters behind the verdict, then further details
ParameterAudio Spectrum Analyzer ProOscilloscope & Spectrogram
PriceFree — better$5.99
Rating4.4 (238 ratings)4.6 (28 ratings) — better
Positive reviews57.4% of reviews70.0% of reviews — better
Number of ratings238 — better28
Update frequencyEvery 7 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank—#199 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size40 MB3 MB
Age rating4+4+
DeveloperVlad PolyanskiyBlue Mangoo Consulting Company Limited

Customer experience

Audio Spectrum Analyzer Pro

All ratings238 ratings
Positive85.3%
Neutral4.6%
Negative10.1%
Written reviews183 reviews
Positive57.4%
Neutral7.1%
Negative35.5%

Oscilloscope & Spectrogram

All ratings28 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews10 reviews
Positive70.0%
Neutral0.0%
Negative30.0%

Bugs and requests

Audio Spectrum Analyzer Pro

Reported bugs

11 issues
  • App crashes on iOS 16 and iOS 26 launches
  • FFT resolution not working after iOS updates
  • Graph display freezes or becomes unresponsive
  • Spectrograph mode too slow on newer iPhones
  • Frequency alignment issues with dynamic display
Show 6 more
  • App won't uninstall properly
  • Malware warnings appearing
  • Help links and support pages broken/dead
  • Incorrect dB level readings (off by ~20dB)
  • Recording functions non-functional
  • Half black screen in certain orientations

Requested features

11 requests
  • Audio file upload capability
  • White noise/test signal generator
  • Microphone calibration file support
  • Recording functionality with timestamp
  • Multiple frequency cursors for comparison
Show 6 more
  • Ability to compare before/after curves
  • Adjustable dB level zoom/scaling
  • Saved settings and personalizations
  • Audio Unit (AUV3) plugin support
  • Peak hold reset button
  • Time-domain recording in spectrograph mode

Oscilloscope & Spectrogram

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Audio Spectrum Analyzer Pro

Subscriptions1
  • Premium Mode7 Days trial$19.991 Year
One-time1
  • Premium Pack$29.99
None

Oscilloscope & Spectrogram

No in-app purchases

Questions

Is Audio Spectrum Analyzer Pro free?
Audio Spectrum Analyzer Pro is free to download, with in-app purchases available.
Is Oscilloscope & Spectrogram free?
Oscilloscope & Spectrogram costs $5.99, with no in-app purchases.
Which has better reviews, Audio Spectrum Analyzer Pro or Oscilloscope & Spectrogram?
Oscilloscope & Spectrogram is rated higher. Audio Spectrum Analyzer Pro averages 4.4 out of 5 from 238 ratings, while Oscilloscope & Spectrogram averages 4.6 from 28 ratings.
Do Audio Spectrum Analyzer Pro or Oscilloscope & Spectrogram have ads?
Neither Audio Spectrum Analyzer Pro nor Oscilloscope & Spectrogram shows ads.
Which is updated more often, Audio Spectrum Analyzer Pro or Oscilloscope & Spectrogram?
Audio Spectrum Analyzer Pro ships an update every 7 months, and Oscilloscope & Spectrogram every 4 days. Most recently, Audio Spectrum Analyzer Pro was updated on September 24, 2026 and Oscilloscope & Spectrogram on September 17, 2026.

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