Echochops vs MF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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)
MF
This app recreates a classic analog delay effects pedal for digital use. It offers warm, organic sound textures with modern flexibility, processing various audio sources like guitars, vocals, and synthesizers.
- Classic analog delay recreation
- Warm, organic sound textures
- Dual-range delay times (40ms-800ms)
- Tempo synchronization
- Extensive time modulation
- AUv3 effects plugin
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The MF-104S Analog Delay is a re-invention of Moog Music’s classic Moogerfooger MF-104 analog effects pedal. The MF-104 Analog Delay, introduced in 2000, added a lush, all-analog delay to the classic line of Moogerfooger effects. It incorporated a dual-range Bucket Brigade Device (BBD) providing a range of delay times from 40 milliseconds to 800 milliseconds. Later versions of the MF-104 offered tempo synchronization, and extensive time modulation options via a multi-waveform LFO. Designed by Bob Moog and his engineering team, the MF-104 was a direct descendant of the original Moog modular synthesizers, adapted to process, modulate, and play with inputs ranging from guitar, voice, and synthesizer to any imaginable audio source. The MF-104 Analog Delay has been meticulously recreated as the MF-104S, capturing all of the warm, organic texture and character of the original analog delay circuitry, while adding 21st-century flexibility and ease of use. The MF-104S is an AUv3 effects plug-in that requires a compatible host or DAW to function.
Screenshots
Verdict
The clearest difference is review sentiment: Echochops at 63% against MF's 0%. Echochops also leads on price ($0.99 vs $14.99). MF's advantage is rating (5.0 vs 3.6) and update cadence (monthly vs every 15 months). 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
Echochops costs $0.99 and MF $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MF holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 5 and 11 respectively. Written reviews complicate that: 63% of Echochops's written reviews are positive against 0% of MF's, so the app with the better star average is not the one people write more warmly about.
Echochops ships an update every 15 months, MF monthly. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.
| Parameter | Echochops | MF |
|---|---|---|
| Price | $0.99 — better | $14.99 |
| Rating | 3.6 (5 ratings) | 5.0 (11 ratings) — better |
| Positive reviews | 62.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 | 11 — better |
| Update frequency | Every 15 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Vision Pro | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Masayuki Akamatsu | Moog Music Inc. |
Customer experience
Echochops
MF
In-app purchases
Echochops
No in-app purchases
MF
No in-app purchases









