Comparison

Oscilloscope & Spectrogram vs BLEASS Granulizer

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
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.

About

BLEASS Granulizer

Transform audio into evolving textures and soundscapes with this granular effect processor. Slice audio into grains and modulate parameters like volume, pitch, and playback direction with a real-time 3D visualizer. Sync to host tempo for dynamic sound design.

Highlights
  • Granular effect processor
  • Real-time parameter modulation
  • 3D visualizer
  • Randomization controls
  • Tempo syncing
  • Multi-bus audio input
Read full description

BLEASS Granulizer is an innovative granular effect processor crafted for musicians, producers, and sound designers who want to transform incoming audio signals into rich, evolving textures and immersive soundscapes. It works by slicing audio inputs into small "grains" and reassembling them through real-time modulation of different parameters that you can visualize thanks to a 3D visualizer: Modulate - Volume - Pan (represented by width in the visualizer) - Size ( = grain’s duration) - Density ( = frequency of grains generation) - Offset ( = the amount of time between record and play represented by the depth in the 3D visualizer) - Backward/Forward Playback Direction - Shape ( = grain’s envelope, represented by the height dimension in the visualizer) - Warmth ( = strength of the distortion applied to the grain) - Tune ( = grains can be pitched up or down according to different modes: “Fine” / Chromatic / Major / Minor / 5th / Major 7th / Minor 7th / Octave. The amount of randomization can be set with the “dice” knobs. Density, grain size, and offset range can be freely synced or beat synced to the host’s tempo. Touching and holding the visualizer modifies pan and density. BLEASS Granulizer takes up to 4 sources from different busses as inputs (compatible host required such as AUM). When multiple busses are on, each grain is randomly extracted from one of the available sources. BLEASS Granulizer is your unique granular texture effect for reshaping any audio source into a dynamic granular soundscape in ways you've never imagined. Check out www.bleass.com/granulizer for video tutorials and more info!

Screenshots

Oscilloscope & Spectrogram4 screens
BLEASS Granulizer3 screens

Verdict

The call

The clearest difference is update cadence: Oscilloscope & Spectrogram at every 4 days against BLEASS Granulizer's every 26 months. Oscilloscope & Spectrogram also leads on chart position (#183 vs unranked) and price ($5.99 vs $6.99). BLEASS Granulizer's advantage is rating (4.9 vs 4.6). On review sentiment, ratings volume, ads and in-app purchases 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 BLEASS Granulizer $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

BLEASS Granulizer holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 28 and 39 respectively. Written reviews complicate that: 70% of Oscilloscope & Spectrogram's written reviews are positive against 67% of BLEASS Granulizer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Oscilloscope & Spectrogram ships an update every 4 days, BLEASS Granulizer every 26 months. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 7 level
Oscilloscope & Spectrogram versus BLEASS Granulizer: the parameters behind the verdict, then further details
ParameterOscilloscope & SpectrogramBLEASS Granulizer
Price$5.99 — better$6.99
Rating4.6 (28 ratings)4.9 (39 ratings) — better
Positive reviews70.0% of reviews — better66.7% of reviews
Number of ratings2839 — better
Update frequencyEvery 4 days — betterEvery 26 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#183 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size3 MB27 MB
Age rating4+4+
DeveloperBlue Mangoo Consulting Company LimitedBLEASS

Customer experience

Oscilloscope & Spectrogram

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

BLEASS Granulizer

All ratings39 ratings
Positive97.4%
Neutral2.6%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

In-app purchases

None

Oscilloscope & Spectrogram

No in-app purchases

None

BLEASS Granulizer

No in-app purchases

Questions

Is Oscilloscope & Spectrogram free?
Oscilloscope & Spectrogram costs $5.99, with no in-app purchases.
Is BLEASS Granulizer free?
BLEASS Granulizer costs $6.99, with no in-app purchases.
Which has better reviews, Oscilloscope & Spectrogram or BLEASS Granulizer?
BLEASS Granulizer is rated higher. Oscilloscope & Spectrogram averages 4.6 out of 5 from 28 ratings, while BLEASS Granulizer averages 4.9 from 39 ratings.
Do Oscilloscope & Spectrogram or BLEASS Granulizer have ads?
Neither Oscilloscope & Spectrogram nor BLEASS Granulizer shows ads.
Which is updated more often, Oscilloscope & Spectrogram or BLEASS Granulizer?
Oscilloscope & Spectrogram ships an update every 4 days, and BLEASS Granulizer every 26 months. Most recently, Oscilloscope & Spectrogram was updated on October 4, 2026 and BLEASS Granulizer on October 11, 2026.

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