Zero Chorus vs CuSnP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zero Chorus
This audio effect plugin provides a high-quality chorus inspired by the Roland Dimension D, offering a versatile sound without muddy low end. It integrates seamlessly with iOS DAWs and supports expanded controls for easy tweaking.
- Roland Dimension D style chorus
- Feedback control for flanging
- AUv3 audio unit extension
- Expanded touch controls
- Desktop quality algorithm
- Thickens guitar and synth parts
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Looking for a rich chorus effect without a muddy low end? Zero Chorus is a high quality Roland Dimension D style chorus plug-in. The addition of a feedback control improves versatility by enabling flanging effects. Zero Chorus is an Audio Unit Extension (AUv3) that works inside host apps. Just open up your favorite host that supports Audio Units and add it as an effect. The controls expand when touched so they can be easily seen while tweaking. Zero Chorus brings a superb chorus algorithm to your favorite iOS DAW. Compatible with GarageBand, Cubasis, Auria, BeatMaker, AudioBus, AUM, Modstep, and more. Blamsoft brings their experience creating top notch plug-ins for the desktop to iOS. The same algorithm is found in the popular Zero Hybrid Synthesizer Rack Extension for Propellerhead Reason. The available parameters allow you to dial in a wide variety of chorus effects, from transparent to heavy. It's great for thickening electric guitar or synth parts. You get a desktop quality algorithm at an iOS friendly price. Tap Developer Website for sound examples. Note: Second screenshot shows the effect of touching a control.
CuSnP
This app acts as a container for a sympathetic string simulation Audio Unit Extension. It requires another application to function, where it generates resonant sounds based on input audio. It's designed for musicians and audio producers.
- Sympathetic string simulation
- Audio Unit Extension (AU)
- Resonates with input audio
- Container for AU functionality
- Documentation included
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CuSnP is an Audio Unit Extension, or AU, for the iPhone and iPad. This application is simply a container for the AU and serves only as the documentation. CuSnP must be used in some sort of AU host or DAW application. CuSnP is a sympathetic string simulation. Input audio excites the strings and causes them to resonate much like the open strings on a piano will resonate when some other sound source excites them.
Screenshots
Verdict
The clearest difference is review sentiment: CuSnP at 100% against Zero Chorus's 43%. CuSnP also leads on price (Free vs $2.99) and rating (4.8 vs 4.2). 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
CuSnP is free to download; Zero Chorus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
CuSnP holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 22 and 36 respectively. Written reviews point the same way: 43% of Zero Chorus's written reviews are positive against 100% of CuSnP's.
Zero Chorus ships an update every 6 months, CuSnP every 2 months. The most recent releases landed on September 18, 2026 and July 7, 2026 respectively.
| Parameter | Zero Chorus | CuSnP |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.2 (22 ratings) | 4.8 (36 ratings) — better |
| Positive reviews | 42.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 22 | 36 — better |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Blamsoft, Inc. | Neon Silicon |
Customer experience
Zero Chorus
CuSnP
In-app purchases
Zero Chorus
No in-app purchases
CuSnP
No in-app purchases









