Zero Chorus vs PSA1000 Jr
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
Read full descriptionHide 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.
PSA1000 Jr
This audio plugin emulates a classic '90s analog guitar preamp, offering rich saturation for guitars, keyboards, bass, and vocals. It includes modern features like a dry/wet mix knob and phase reverse for enhanced versatility in recording and mixing.
- Analog saturation emulation
- Dry/Wet mix knob
- Phase Reverse switch
- In and Out level controls
- Standalone, AUv3, and IAA support
Read full descriptionHide full description
The PSA1000 Jr Analog Saturation Unit plugin is a modern recreation of a '90s classic analog guitar preamp which is used in recording studios all around the world! It is used and "abused" for recording and characterizing not only guitars but also electric pianos, organs, synthesizers, electric basses and many other instruments. The original unit has found its place even in the mix stage for processing all type of sounds, as drum rooms, percussions, vocals, kicks, snares and sound fx too! For creating the PSA1000 Jr Analog Saturation Unit plugin, Nembrini Audio has carefully modeled the original analog circuits and finely refined it by ear as all its products. Nembrini Audio also adds new features that brings the PSA1000 Analog Saturation Unit plugin to modern days: - Dry/Wet mix knob for both channels - Phase Reverse switch to take advantage of the original phase changes in the real analog unit when used in parallel - In and Out level knobs for maximum versatility Works as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect
Screenshots
Verdict
The clearest difference is review sentiment: PSA1000 Jr at 100% against Zero Chorus's 43%. PSA1000 Jr also leads on rating (5.0 vs 4.2). Zero Chorus's advantage is price ($2.99 vs $8.99). On ratings volume, update cadence, ads and in-app purchases 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
Zero Chorus costs $2.99 and PSA1000 Jr $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
PSA1000 Jr holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 22 and 21 respectively. Written reviews point the same way: 43% of Zero Chorus's written reviews are positive against 100% of PSA1000 Jr's.
Zero Chorus ships an update every 6 months, PSA1000 Jr every 9 months. The most recent releases landed on September 26, 2026 and September 21, 2026 respectively.
| Parameter | Zero Chorus | PSA1000 Jr |
|---|---|---|
| Price | $2.99 — better | $8.99 |
| Rating | 4.2 (22 ratings) | 5.0 (21 ratings) — better |
| Positive reviews | 42.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 22 — better | 21 |
| Update frequency | Every 6 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Blamsoft, Inc. | Nembrini Audio |
Customer experience
Zero Chorus
PSA1000 Jr
In-app purchases
Zero Chorus
No in-app purchases
PSA1000 Jr
No in-app purchases
