Comparison

Zero Chorus vs CuSnP

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

Head to head
About

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.

Highlights
  • Roland Dimension D style chorus
  • Feedback control for flanging
  • AUv3 audio unit extension
  • Expanded touch controls
  • Desktop quality algorithm
  • Thickens guitar and synth parts
Read full description

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.

About

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.

Highlights
  • Sympathetic string simulation
  • Audio Unit Extension (AU)
  • Resonates with input audio
  • Container for AU functionality
  • Documentation included
Read full description

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

Zero Chorus2 screens
CuSnP4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Zero Chorus versus CuSnP: the parameters behind the verdict, then further details
ParameterZero ChorusCuSnP
Price$2.99Free — better
Rating4.2 (22 ratings)4.8 (36 ratings) — better
Positive reviews42.9% of reviews100.0% of reviews — better
Number of ratings2236 — better
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size15 MB9 MB
Age rating4+4+
DeveloperBlamsoft, Inc.Neon Silicon

Customer experience

Zero Chorus

All ratings22 ratings
Positive77.3%
Neutral4.5%
Negative18.2%
Written reviews21 reviews
Positive42.9%
Neutral4.8%
Negative52.4%

CuSnP

All ratings36 ratings
Positive94.4%
Neutral2.8%
Negative2.8%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Zero Chorus

No in-app purchases

None

CuSnP

No in-app purchases

Questions

Is Zero Chorus free?
Zero Chorus costs $2.99, with no in-app purchases.
Is CuSnP free?
CuSnP is free to download, with no in-app purchases.
Which has better reviews, Zero Chorus or CuSnP?
CuSnP is rated higher. Zero Chorus averages 4.2 out of 5 from 22 ratings, while CuSnP averages 4.8 from 36 ratings.
Do Zero Chorus or CuSnP have ads?
Neither Zero Chorus nor CuSnP shows ads.
Which is updated more often, Zero Chorus or CuSnP?
Zero Chorus ships an update every 6 months, and CuSnP every 2 months. Most recently, Zero Chorus was updated on September 18, 2026 and CuSnP on July 7, 2026.

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