Comparison

Echochops vs GSDSP Quantum Granulator

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

Head to head
About

Echochops

This app creates a feedback delay effect on sounds from your device's microphone, mimicking an echo. It allows for creative musical patterns and ambient sound experiences through adjustable delay times and filters. Experiment with various audio effects for both musical and experimental purposes.

Highlights
  • Adjustable delay time up to 60 seconds
  • Feedback rate control
  • Four audio filter types
  • Parameter control via tilt and rotation
  • Glitch and Funny delay modes
  • Background audio playback
Features
Read full description

The extreme delay machine that you've never heard before. In short: This is a Karaoke echo machine. Words spoken in the iPhone's microphone will come back a few seconds later. It's like the echo effect you can hear at a mountain. You can get various kinds of effects by changing the delay time and the feedback rate. To make music: Tap on the table - it sounds like "tock"......"tock"....."tock"..... Clap your hands - you'll hear "tock", "clap", "tock", "clap", "tock", "clap"... You can produce simple musical patterns this way. Daily life use: Leave it as it is. It's fun to hear repeating sounds of ordinary life. You can use the stereo headset with the mic. Take a walk with the iPhone in your pocket and enjoy the repeating sounds around you. In detail: "Echochops" produces a feedback delay effect (an echo effect) on the sounds from the iPhone's microphone. The feedback delay is widely used to produce rich vocal and guitar sounds. It is also used as a special kind of musical performance. You can use "Echochops" not only as a "musical" application but also as a "noisy" experiment. Features: - Input and output level meter - Input and output level setting - Delay time setting, within 60 seconds. - Feedback rate setting, from 0% to 100% - Direct and Delay balance setting - Four types of audio filters (Lowpass, Highpass, Bandpass, Notch) - Audio filter frequency setting - Audio filer Q setting - Parameter control by audio input/output levels - Parameter control by tilting - Parameter control by rotating (a compass-equipped device only) - Mode setting to change delay time, "Glitch" or "Funny". - Output route setting, headphone/receiver or speaker. - Tilt angle setting for controlling - Upside-down portrait mode for efficient use of microphone and speaker - Delayed sound can be erased - Works with iPod audio simultaneously - Background audio playback (iOS 4.0 and later) [[ ATTENTIONS ]] Due to a latency of an audio input and output, the actual delaying time will be slightly longer than the setting. A natural feedback through the air may happen because the microphone and speaker are placed closely on the iPhone. Distorted sounds or harsh grating noises will be produced depending of the setting of parameters. It would be better NOT to use this application if you cannot stand noisy sounds. [[ Address of Gratitude ]] Thanks to Mr. Kaoru Sato (EP-4)

About

GSDSP Quantum Granulator

This live granular processor allows you to break down audio into small pieces or create atmospheric soundscapes. It features dual live buffers, a musical grain engine with tempo sync, and expressive pitch control with MIDI support. Shape your sound with an intuitive XY pad and mix section for detailed sonic manipulation.

Highlights
  • Dual live recording buffers
  • Tempo-synced grain triggering
  • Expressive pitch control with scales
  • 2D XY pad for grain shaping
  • MIDI playable granular instrument
  • AUv3 audio effect plugin
Features
Read full description

This Live Granular Processor lets you decompose audio into bits and pieces or lovely clouds. Dual Live Buffers Quantum Granulator is a powerful live granular processor designed for deep, hands-on sonic manipulation in real-time. Two independent recording buffers capture your signal and let you freeze, loop, or continuously record audio for instant transformation. Whether you’re sampling from the Main Input, Sidechain A, or Sidechain B, you’re in full control of what goes in — and what comes out. Musical Grain Engine Trigger grains freely in Hz or lock them to tempo for tight rhythmic effects. Adjust grain length, offset and density — from crisp stutters to blurred, cinematic clouds. Randomization adapts to your mode: in Hz it behaves like a geiger counter, adding sharp, bursty unpredictability; in BPM sync it becomes more spray-like, scattering grains around the beat for rhythmically coherent textures. Expressive Pitch Control Our easy-to-use scale picker lets you quantize grains to 30+ built-in musical scales, create your own, or let randomness take over. Play grains via MIDI to turn Quantum Granulator into an expressive granular instrument. Pitch shifting covers a broad ±24 semitone range and a separate fine control allows subtle adjustments within ±1 semitone, perfect for microtonal tuning or adding vibrato-like motion. Versatile Grain Shaping An intuitive 2D Envelope XY pad lets you sharpen or soften vertically, adjust attack and release horizontally. Control level, panning, and filtering to craft subtle movement or fully chaotic sound clusters. Shape the balance using the mix section — from subtle texture to complete granular obliteration. Granular Synthesis, Made Playable Quantum Granulator isn’t just a tool — it’s an instrument. Built for performers, producers, and sound explorers alike, it offers a deep but immediate interface into the world of granular synthesis, with every detail tuned for musicality and expression. Quantum Granulator is an AUv3 audio effect plugin compatible with Logic Pro, AUM, Cubasis, GarageBand and many more. A Desktop version is also available for Windows and macOS (VST3 / AU / AAX). More information here: https://gs-dsp.com/products

Screenshots

Echochops4 screens
GSDSP Quantum Granulator3 screens

Verdict

The call

The clearest difference is price: Echochops at $0.99 against GSDSP Quantum Granulator's $14.99. GSDSP Quantum Granulator's advantage is rating (5.0 vs 3.6) and review sentiment (100% vs 63%). 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

Echochops costs $0.99 and GSDSP Quantum Granulator $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

GSDSP Quantum Granulator holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 5 and 7 respectively. Written reviews point the same way: 63% of Echochops's written reviews are positive against 100% of GSDSP Quantum Granulator's.

UpkeepUpdate frequency

Echochops ships an update every 15 months, GSDSP Quantum Granulator every 5 weeks. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.

Scorecard5 real differences · 5 level
Echochops versus GSDSP Quantum Granulator: the parameters behind the verdict, then further details
ParameterEchochopsGSDSP Quantum Granulator
Price$0.99 — better$14.99
Rating3.6 (5 ratings)5.0 (7 ratings) — better
Positive reviews62.5% of reviews100.0% of reviews — better
Number of ratings57 — better
Update frequencyEvery 15 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, Vision ProiPhone, iPad, iPod
Requires iOS16.012.0 — better
Further details — not scored
Size1 MB61 MB
Age rating4+4+
DeveloperMasayuki AkamatsuGustav Scholda

Customer experience

Echochops

All ratings5 ratings
Positive60.0%
Neutral20.0%
Negative20.0%
Written reviews32 reviews
Positive62.5%
Neutral12.5%
Negative25.0%

GSDSP Quantum Granulator

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Echochops

No in-app purchases

None

GSDSP Quantum Granulator

No in-app purchases

Questions

Is Echochops free?
Echochops costs $0.99, with no in-app purchases.
Is GSDSP Quantum Granulator free?
GSDSP Quantum Granulator costs $14.99, with no in-app purchases.
Which has better reviews, Echochops or GSDSP Quantum Granulator?
GSDSP Quantum Granulator is rated higher. Echochops averages 3.6 out of 5 from 5 ratings, while GSDSP Quantum Granulator averages 5.0 from 7 ratings.
Do Echochops or GSDSP Quantum Granulator have ads?
Neither Echochops nor GSDSP Quantum Granulator shows ads.
Which is updated more often, Echochops or GSDSP Quantum Granulator?
Echochops ships an update every 15 months, and GSDSP Quantum Granulator every 5 weeks. Most recently, Echochops was updated on October 11, 2026 and GSDSP Quantum Granulator on October 9, 2026.

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