Echochops vs Addictive Pro
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)
Addictive Pro
This app offers a powerful hybrid synthesis engine for creating complex and dynamic sounds. Explore wavetable, noise, virtual analog, and FM synthesis with extensive modulation and effects. It includes a polyrhythm arpeggiator and real-time control options for musical inspiration and sound design.
- Hybrid synthesis engine
- Wavetable spectrum synthesis
- Virtual Analog synthesis
- Polyrhythm Arpeggiator
- Real-time parameter control
- Studio-standard effects section
- AudioUnit Instrument support
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The hybrid synthesis algorithm on which Addictive Pro is based provides you with efficient means for easy control of complex sounds far beyond usual sound synthesis methods: Addictive Pro provides you a with unique form of Wavetable oscillators. These Wavetables are generated from the harmonic content and the free digital filter structure entered by the user. The sound of up to 12 of this Wavetable oscillators is then further refined with a classic analog filter available in several 24dB and 12dB forms. For the optional noise part of the sound you can use the same sophisticated digital filter struct as for the wavetable oscillators allowing for a vast variety of ever changing noisescapes. The intelligent sound and rhythm randomizer can be applied to different sound aspects separately for really useful sound design and inspiration. A four part polyrhythm Arpeggiator creates complex rhythmical structures with a touch of a finger. Features: Hybrid synthesis engine • Wavetable spectrum synthesis • Noise spectrum synthesis • Virtual Analog synthesis • FM and Ringmodulation synthesis Synthesizer details • Twelve wavetable spectrum oscillators per voice. • Morphing between two wave/filter sets. • Waves contain up to 256 partials. • Hand drawn filter structure. • Spectral noise generator using hand drawn filter structure. • Ten major sound parameters each with independent poly LFO and envelope modulators. • Real time parameter control using two X/Y touch pads, the tilt sensors of the iPad and MIDI Controllers. • Monophonic or polyphonic with up to 16 voices. • 300 factory presets, unlimited user presets can be shared. Effect section • Seven studio standard effects concurrently usable: • Oversampled distortion with four different algorithms for antialiased sound. • Low / High equalizer • 8 pole analog Phaser • Flanger • Four line chorus • Stereo/Ping-Pong delay with glitch free delay time change. • Hi end reverberation unit. Four part Polyrhythm Arpeggiator • Uses programmable sequences with up to 32 steps. • Can trigger single notes and chords. • Unique randomizer generates Arpeggios with 100% usability. • Factory arpeggios included, unlimited user arpeggios possible. • For each step you can program tie, accent, transposition and note order Global • Play melodies live with the onscreen keyboard. Unique drag function for slides and vibrato. • AudioUnit Instrument • Audiobus 2 with state saving • Inter App Audio • Ableton Link support • Can use CoreMIDI compatible MIDI Keyboard. • Select from dozens of scales and play them with scale optimized keyboard layout. • Audio recorder with share function. • Share user presets. • Support for virtual MIDI input connections. • Multichannel MIDI Learn for external MIDI controllers. • Ableton Link compatible. • MIDI Tempo sync. Start/Stop Arpeggio. • MIDI bank/program change. • Import function for Addictive Synth presets. • File sharing of presets via iTunes possible
Screenshots
Verdict
The clearest difference is rating: Addictive Pro at 4.7 against Echochops's 3.6. Addictive Pro also leads on update cadence (every 2 weeks vs every 15 months) and review sentiment (75% vs 63%). Echochops's advantage is price ($0.99 vs $5.99) and device support (3 vs 1). On 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 Addictive Pro $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Addictive Pro holds the better App Store score, 4.7 against 3.6. Both are backed by a comparable volume of ratings — 5 and 18 respectively. Written reviews point the same way: 63% of Echochops's written reviews are positive against 75% of Addictive Pro's.
Echochops ships an update every 15 months, Addictive Pro every 2 weeks. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.
| Parameter | Echochops | Addictive Pro |
|---|---|---|
| Price | $0.99 — better | $5.99 |
| Rating | 3.6 (5 ratings) | 4.7 (18 ratings) — better |
| Positive reviews | 62.5% of reviews | 75.0% of reviews — better |
| Number of ratings | 5 | 18 — better |
| Update frequency | Every 15 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Vision Pro — better | iPad |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Masayuki Akamatsu | Harry Gohs |
Customer experience
Echochops
Addictive Pro
In-app purchases
Echochops
No in-app purchases
Addictive Pro
No in-app purchases









