Comparison

Oscilloscope & Spectrogram vs Spatializer

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

Head to head
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
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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.

About

Spatializer

Enhance audio with stereo widening that preserves mono compatibility and avoids phase issues. This tool synthesizes side channel information, ideal for mono sources or adding depth to existing stereo tracks without compromising the mid channel.

Highlights
  • Stereo widening without phase smearing
  • Synthesizes side channel information
  • Preserves mid channel integrity
  • Flexible for mono and stereo sources
  • Transparent or strong effect options
  • Multiband transient shapers
  • Directional RMS distribution visualization
Features
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Spatializer is a great choice if you want to widen your sounds but need to avoid: • phase smearing in the mono mix • phasing / comb filter effects (from asymmetric channel delays) • or any changes to the mid channel or mono mix The plugin's main focus is to enhance sounds that have little or no side channel information, where traditional widening approaches like mid-side processing can't be effectively used. It also offers more flexibility in case of mixed inputs, widening narrow components without boosting already existing stereo width to extreme levels that would drown out the mid channel, leading to stereo image problems. Spatializer can also be combined with other effects, for example it's excellent for augmenting large-scale reverbs by enhancing the more immediate space or effectively moving the listener closer to the virtual sound source. At large timescales, the plugin takes on some of the qualities of a reverb itself, while keeping the mid channel sharp and free of any reflections. This could either be used as a special effect in and of itself (depending on the transient characteristics of the input), or be blended together with traditional ambience or acoustic space simulation effects. FEATURES: • Synthesis of side channel information where there was none (stereoization of mono sources) • Linear phase mid channel • Capability to deliver both a neutral / transparent response as well as stronger effects • Built-in multiband transient shapers for delivering a more focused response by suppressing outlier reflections • Multiple visualization options: Directional RMS distribution, position and motion • Effects can range from close-proximity / spatial audio effects to larger acoustic space reflections • Baseline frequency response is optimized to maximize flatness, balancing the spectral density of Left, Right, Side channels The built-in selection of subtly tuned presets and the combined psychoacoustic properties of the above features give more leeway to easily experiment with kinds of source material that have traditionally presented difficulties, like tracks with prominent LF content. Due to its ability to provide transparent, subtle and high-clarity responses, as well as good spectral density characteristics, Spatializer can also be included in master bus effects chains. In multi-track setups it can be used in parallel with other positioning methods to bring more variation to the sound stage or to provide additional ways to adjust the mix. For audio demos, visit: www.quantovox.com/sp PLEASE NOTE: • AUv3-compatible host application required • Supported sampling rates: 22.05, 44.1, 48, 96 kHz.

Screenshots

Oscilloscope & Spectrogram4 screens
Spatializer2 screens

Verdict

The call

The clearest difference is update cadence: Oscilloscope & Spectrogram at every 4 days against Spatializer's every 2 months. Oscilloscope & Spectrogram also leads on price ($5.99 vs $9.99). Spatializer's advantage is review sentiment (91% vs 70%) and rating (4.8 vs 4.6). On ratings volume, ads, in-app purchases and monetization model 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

Oscilloscope & Spectrogram costs $5.99 and Spatializer $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Spatializer holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 28 and 27 respectively. Written reviews point the same way: 70% of Oscilloscope & Spectrogram's written reviews are positive against 91% of Spatializer's.

UpkeepUpdate frequency

Oscilloscope & Spectrogram ships an update every 4 days, Spatializer every 2 months. The most recent releases landed on September 17, 2026 and September 27, 2026 respectively.

Scorecard4 real differences · 6 level
Oscilloscope & Spectrogram versus Spatializer: the parameters behind the verdict, then further details
ParameterOscilloscope & SpectrogramSpatializer
Price$5.99 — better$9.99
Rating4.6 (28 ratings)4.8 (27 ratings) — better
Positive reviews70.0% of reviews90.9% of reviews — better
Number of ratings28 — better27
Update frequencyEvery 4 days — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better12.1
Further details — not scored
Size3 MB13 MB
Age rating4+4+
DeveloperBlue Mangoo Consulting Company Limitedquantovox

Customer experience

Oscilloscope & Spectrogram

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

Spatializer

All ratings27 ratings
Positive96.3%
Neutral0.0%
Negative3.7%
Written reviews11 reviews
Positive90.9%
Neutral9.1%
Negative0.0%

In-app purchases

None

Oscilloscope & Spectrogram

No in-app purchases

None

Spatializer

No in-app purchases

Questions

Is Oscilloscope & Spectrogram free?
Oscilloscope & Spectrogram costs $5.99, with no in-app purchases.
Is Spatializer free?
Spatializer costs $9.99, with no in-app purchases.
Which has better reviews, Oscilloscope & Spectrogram or Spatializer?
Spatializer is rated higher. Oscilloscope & Spectrogram averages 4.6 out of 5 from 28 ratings, while Spatializer averages 4.8 from 27 ratings.
Do Oscilloscope & Spectrogram or Spatializer have ads?
Neither Oscilloscope & Spectrogram nor Spatializer shows ads.
Which is updated more often, Oscilloscope & Spectrogram or Spatializer?
Oscilloscope & Spectrogram ships an update every 4 days, and Spatializer every 2 months. Most recently, Oscilloscope & Spectrogram was updated on September 17, 2026 and Spatializer on September 27, 2026.

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