Comparison

Echochops vs auGEN X

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

auGEN X

This app generates a wide variety of audio signals for both creative sound design and precise audio system testing. It features a versatile oscillator, noise generator, and impulse generator, functioning as a standalone app or an AUv3 Audio Unit Extension.

Highlights
  • Full-featured audio oscillator with 4 wave shapes
  • High-quality noise generator (white and pink)
  • Impulse generator for reverb testing
  • AUv3 Audio Unit Extension and Stand-Alone App
  • MIDI In and BPM Sync support
  • Precise signal control with intuitive UI
Features
Read full description

auGEN X bridges the creative musical world of artists with the exacting scientific world of audio engineers. What started as a precision audio test utility has grown into a fun experimental sound design instrument. On one end use auGEN X to help set up, test, calibrate, and optimize your audio system. On the other use it to create a wide variety of interesting sounds. auGEN X has a full-featured audio oscillator, a high quality noise generator, and an impulse generator. The simple yet powerful user interface is designed for fast, precise, intuitive control over your signals. auGEN X works both as a Stand-Alone App and as an AUv3 Audio Unit Extension responding to MIDI In and BPM Sync from Hosts. I started making this app because as an audio electronics engineer I could not find a single audio generator that does everything that I require AND is an AUv3 Audio Unit. auGEN X has expanded into a musical tool for exploring and learning sound design. Our goal is for auGEN X to be an Essential in your audio toolbox. We hope you enjoy it and we’re excited to hear the cool things that you do with auGEN X! "I really see this app becoming a standard and a must have component in one's iOS audio app arsenal." - Paul Henry, Paul Henry Pro Audio FEATURES - Oscillator - 3 Modes: Fixed, Frequency or Level Sweep - 4 Wave Shapes: Sine, Triangle, Rectangle, & Saw - Tri & Rect have a Duty Cycle control (1.0% to 99.0%) - Tri, Saw, & Rect are alias-suppressed yielding virtually alias-free performance at musical fundamental frequencies - 10 to 20,480 Hz extended audio frequency range (great for testing subwoofers!) - Full-featured Frequency or Level Sweep with 5 Types, settable Direction, & selectable Repeat or 1-Shot Mode - Sweep Period has a wicked wide range from 1/10,000th of a second to 100 seconds and can alternatively be set as a Sweep Rate in Hz or BPM - Wide sweep range allows for FM & AM style sounds - Noise Generator - 2 Modes: Fixed or Level Sweep - White or Pink Noise - Pink Noise conforms to SMPTE Standard 2095-1:2015 Calibration Reference Wideband Digital Pink Noise Signal - Impulse Generator (useful for checking reverb algorithms) - Impulse Width can be set in samples - AUv3 Audio Unit Extension or Stand-Alone App - Verified to work great in AUv3 Hosts such as GarageBand, Cubasis, AUM, apeMatrix, BeatMaker 3, & Auria Pro - As a Stand-Alone App audio is sent to iPad's built-in speakers, Headphone/Line Out, or to any iOS-compatible USB audio interface connected to the Lightning jack APPLICATIONS - Creative experimental sound design - Sound effects for film, TV, & games - Great chiptune style sounds - Synthesize sirens or alarms - Test, characterize audio equipment - Set up or dial in a home theater - Tune car audio systems - Test subwoofers - Hearing tests - Ear training - Vibration analysis SPECIFICATIONS - Audio signal path uses state of the art Double Precision 64-bit Floating Point for maximum accuracy - Stereo out - Selectable Pan Laws include Linear & Constant Power Panning - Supports 44.1, 48, 88.2, & 96 kHz sample rates - User Guide embedded in App - no internet connection required to read it SYSTEM REQUIREMENTS - Compatible with iOS 9.0 & up (iPad 2, iPad mini (1st Generation), & up) - Support way back to iOS 9 means auGEN X works on every iPad model (except the very first iPad). Breathe new life into your old iPad by using auGEN X to make it a dedicated, precision audio source. - AUv3 Audio Unit Extensions require iPad 4, iPad mini 2, and up - 88.2 & 96 kHz sample rate require iOS-compatible USB audio interface connected to the Lightning jack Watch demos & tutorials on auDSPr's YouTube channel. Subscribe on YouTube: https://youtube.com/channel/UCRZm2cKWVJVfK-l9zrnMeFg Like Us on Facebook: https://facebook.com/AUDSPr-1392948064183211 Follow Us on Twitter: https://twitter.com/auDSPr Keep your ears and eyes open for more upcoming auDSPr audio apps!

Screenshots

Echochops4 screens
auGEN X3 screens

Verdict

The call

The clearest difference is rating: auGEN X at 4.6 against Echochops's 3.6. auGEN X also leads on update cadence (every 3 months vs every 15 months) and review sentiment (86% vs 63%). Echochops's advantage is price ($0.99 vs $9.99). 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 auGEN X $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

auGEN X holds the better App Store score, 4.6 against 3.6. Both are backed by a comparable volume of ratings — 5 and 12 respectively. Written reviews point the same way: 63% of Echochops's written reviews are positive against 86% of auGEN X's.

UpkeepUpdate frequency

Echochops ships an update every 15 months, auGEN X every 3 months. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.

Scorecard5 real differences · 5 level
Echochops versus auGEN X: the parameters behind the verdict, then further details
ParameterEchochopsauGEN X
Price$0.99 — better$9.99
Rating3.6 (5 ratings)4.6 (12 ratings) — better
Positive reviews62.5% of reviews85.7% of reviews — better
Number of ratings512 — better
Update frequencyEvery 15 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, Vision ProiPhone, iPad, iPod
Requires iOS16.09.0 — better
Further details — not scored
Size1 MB57 MB
Age rating4+4+
DeveloperMasayuki AkamatsuauDSPr

Customer experience

Echochops

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

auGEN X

All ratings12 ratings
Positive91.7%
Neutral0.0%
Negative8.3%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

In-app purchases

None

Echochops

No in-app purchases

None

auGEN X

No in-app purchases

Questions

Is Echochops free?
Echochops costs $0.99, with no in-app purchases.
Is auGEN X free?
auGEN X costs $9.99, with no in-app purchases.
Which has better reviews, Echochops or auGEN X?
auGEN X is rated higher. Echochops averages 3.6 out of 5 from 5 ratings, while auGEN X averages 4.6 from 12 ratings.
Do Echochops or auGEN X have ads?
Neither Echochops nor auGEN X shows ads.
Which is updated more often, Echochops or auGEN X?
Echochops ships an update every 15 months, and auGEN X every 3 months. Most recently, Echochops was updated on October 11, 2026 and auGEN X on October 1, 2026.

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