Comparison

Zero Chorus vs EQ

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

EQ

This audio plug-in emulates a classic British equalizer from the 1970s. It offers extensive tonal control with four bands of equalization, high-pass and low-pass filters, and various operational modes. A demo version is available for free, with an unlimited version offered as an in-app purchase.

Highlights
  • Classic British EQ emulation
  • Four bands of equalization
  • High-pass and low-pass filters
  • Stereo, Mid, or Side EQ modes
  • Saturation On/Off
  • Undo/Redo and A/B comparison
  • Standalone and AUv3 plugin
Read full description

EQ-A AUv3 plug-in — comes as time-limited Demo-version for you to try. It gives you 5 minutes of Free play time. (You can reload the EQ-A AUv3 plug-in as many times as you want, thereby you get the Demo period again and again.) Unlimited version of EQ-A AUv3 plug-in comes as In-App Purchase. The EQ-A based on Classic British EQ from the '70s. With a surprisingly wide range of tonal variations, the EQ-A is an invaluable and professional audio tool with great flexibility and excellent sonic ability. Features: • Standalone and AUv3 plug-in; • Precise port of Rack Extensions plug-in; • Modeled vintage EQ; • Four bands of classic British equalization (the mid frequency EQ sections are «peaking», while the high and low frequency sections are «shelving»); • Each band offers 4 selected frequency centers; • 15 dB of boost/cut per band; • Three high pass filters at 18 dB per octave and three low pass filters at 12 dB per octave; • Stereo (Mono), Mid or Side EQ modes; • Saturation On/Off-button; • The main of the EQ section allows four frequencies at any one time, switchable to one of four frequencies: Low Filter (Shelf): 50, 80, 100, 150 Hz; Low-Mid Filter (Bell): 250, 500, 1k, 2k Hz; High-Mid Filter (Bell): 3k, 5k, 7k, 9k Hz; High Filter (Shelf): 8k, 10k, 12k, 15k Hz; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Built-in Gain Match; • Scalable GUI. A series of three high pass filters at 18 dB per octave and three low pass filters at 12 dB per octave are arranged at the ends of the EQ section. They are unique in that the switches can be pushed in simultaneously, offering distinct cut filter combinations with unusual filter curves. The EQ-A extends the features of the original hardware and joins the flexibility of the digital world to the character of the analog processing. Allows you to choose between equalizer modes (Stereo, Mid, Side) and remove analogue saturation from the processing circuit to deliver pure digital sound.

Screenshots

Zero Chorus2 screens
EQ4 screens

Verdict

The call

The clearest difference is review sentiment: EQ at 90% against Zero Chorus's 43%. EQ also leads on price (Free vs $2.99) and rating (4.8 vs 4.2). Zero Chorus's advantage is in-app purchases (none vs 1). On ratings volume, ads 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

CostPrice · In-app purchases · Ads · Monetization

EQ is free to download; Zero Chorus costs $2.99 up front. EQ sells 1 one-off in-app purchase. Zero Chorus asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

EQ holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 22 and 20 respectively. Written reviews point the same way: 43% of Zero Chorus's written reviews are positive against 90% of EQ's.

UpkeepUpdate frequency

Zero Chorus ships an update every 6 months, EQ every 2 weeks. The most recent releases landed on September 18, 2026 and August 20, 2026 respectively.

Scorecard7 real differences · 3 level
Zero Chorus versus EQ: the parameters behind the verdict, then further details
ParameterZero ChorusEQ
Price$2.99Free — better
Rating4.2 (22 ratings)4.8 (20 ratings) — better
Positive reviews42.9% of reviews90.0% of reviews — better
Number of ratings22 — better20
Update frequencyEvery 6 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.010.0 — better
Further details — not scored
Size15 MB22 MB
Age rating4+4+
DeveloperBlamsoft, Inc.RRS, OOO

Customer experience

Zero Chorus

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

EQ

All ratings20 ratings
Positive95.0%
Neutral0.0%
Negative5.0%
Written reviews10 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

In-app purchases

None

Zero Chorus

No in-app purchases

1 purchases

EQ

One-time1
  • RRS EQ-A Unlimited$4.99

Questions

Is Zero Chorus free?
Zero Chorus costs $2.99, with no in-app purchases.
Is EQ free?
EQ is free to download, with in-app purchases available.
Which has better reviews, Zero Chorus or EQ?
EQ is rated higher. Zero Chorus averages 4.2 out of 5 from 22 ratings, while EQ averages 4.8 from 20 ratings.
Do Zero Chorus or EQ have ads?
Neither Zero Chorus nor EQ shows ads.
Which is updated more often, Zero Chorus or EQ?
Zero Chorus ships an update every 6 months, and EQ every 2 weeks. Most recently, Zero Chorus was updated on September 18, 2026 and EQ on August 20, 2026.

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