Zero Reverb vs CuSnP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zero Reverb
Enhance your music production with a modern, high-quality reverb effect. This Audio Unit Extension (AUv3) works within compatible host apps, offering a rich, hall-like sound with adjustable parameters for diverse textures. Easily tweak settings with its expandable controls.
- Audio Unit Extension (AUv3) plugin
- Modern hall-like reverb character
- Rich feedback and smooth decay
- Expandable controls for easy tweaking
- Wide variety of reverb textures
- Compatible with popular DAWs and hosts
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Tired of the stock reverb in your DAW? Looking for a more modern sound? Zero Reverb is an Audio Unit Extension (AUv3) that works as a plug-in 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 Reverb will soon become your go-to reverb plug-in on iOS. Compatible with GarageBand, Cubasis, Auria, BeatMaker, AudioBus, AUM, Modstep, and more. Zero Reverb is a high quality Feedback Delay Network reverberator. The algorithm has rich feedback with smooth decay for a modern hall-like reverb character. Blamsoft brings their experience creating high quality 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 reverb textures. 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 Reverb's 35%. CuSnP also leads on price (Free vs $2.99) and rating (4.8 vs 3.4). Zero Reverb's advantage is chart position (#174 vs unranked). On ratings volume, ads, in-app purchases and device support 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 Reverb 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 3.4. Both are backed by a comparable volume of ratings — 46 and 36 respectively. Written reviews point the same way: 35% of Zero Reverb's written reviews are positive against 100% of CuSnP's.
Zero Reverb 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 Reverb | CuSnP |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.4 (46 ratings) | 4.8 (36 ratings) — better |
| Positive reviews | 34.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 46 — better | 36 |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #174 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Blamsoft, Inc. | Neon Silicon |
Customer experience
Zero Reverb
CuSnP
In-app purchases
Zero Reverb
No in-app purchases
CuSnP
No in-app purchases
