Comparison

AudioEffX vs Spatializer

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

Head to head
About

AudioEffX

This app offers seven studio-quality audio effect modules for live use and enhancing music libraries. Effects can be chained in any order to create rich, modulated, or distorted sounds. It simulates room acoustics with adjustable reverb parameters for a customized listening experience.

Highlights
  • Seven studio-quality effect modules
  • Live usage and music library enrichment
  • Chained effect modules in any order
  • Chorus, Delay, Drive, ParaEQ, Flanger, Phaser, Reverb effects
  • Adjustable reverb parameters (tail, time, room size, diffusion, absorption, stereo)
  • Sync mode for delay effects
Features
Read full description

Multieffect Audioprocessor Seven studio quality effect modules for live usage and to enrich your iTunes music library. All effect modules can be used together chained in any order you like. The Chorus effect is a modulation effect used used to create a richer, thicker sound and add subtle movement. The effect roughly simulates the slight variations in pitch and timing that occur when multiple performers sing or play the same part. The Delay effect provides you with two different types of delay effects using two delay lines. With Sync mode the delay times can be set by note lengths and are then relative to the currently set tempo. The delayed signal can be feed back to the input for echo effects. You can select between a stereo delay and a ping-pong delay where the echoes bounces across the stereo field. The Drive effect provides you with different types of distortion from hard clipping to soft distortion simulating analog tube amplifiers and tape machines. The sound balance can be adjusted using a combined High/Lowpass filter. The distortion algorithm uses oversampling to reduce aliasing artefacts. The ParaEQ effect is a parametric equalizer with optional graphic editing of Lowpass/Highpass and Bandpass equalizer stage. The Flanger is composed of two independent delay lines with feedback for the left and the right channel respectively. The delay time of both delays is modulated by one LFO with adjustable frequency. For typical flanging effects the delay time should be below 5 milliseconds. The Phaser is built from an 8-pole allpass filter, which gives you a very short and frequency dependent delay time. This delay time is modulated by an LFO. The Reverb effect is used to simulate the sound reflections off walls in different kind of rooms. This reflections disperse the sound, enriching it by overlapping the sound with its reflection. This reverb parameter are accessible by the user: • Tail delay - Sets the amount of time that elapses between the direct sound and the reverberation tail. This time correlates with the perceived size of the simulated room. The adjustable range is from 0 ms to 300 ms. • Reverb time - The time the reverb takes to die away by 60dB after the end of the initial sound. This parameter correlates with the perceived size of the simulated room. The adjustable range is from 50 ms to 100 seconds. • Room size - The room size parameter sets the average distance between the reflecting walls. • Diffusion - The Diffusion parameter controls the echo density of the resulting reverberant sound. A higher value corresponds to a higher echo density which is in most cases more natural sounding. • Absorption - The Absorption parameter simulates the surface and air absorption of high frequencies. Due to absorption the reverberation time is shorter for high frequencies than for low frequencies. With higher absorption high frequencies will decay much faster. • Tail stereo - Adjusts the stereo image width of the reverberation tail. • Tail cutoff / tone - Lowpass and Highpass filter for the reverb tail. Summary of features: • Seven studio quality audio effects • AudioUnit for AUv3 compatible hosts. • AudioUnit full parameter automation. • Inter-app audio compatible effect. • Audiobus 3 compatible with state saving. • Apply multi effect to any song in your iTunes library. • Low latency live usage with mic and headphones. • Audio recorder • Ableton Link compatible.

About

Spatializer

Enhance audio with stereo widening that preserves mono compatibility and avoids phase issues. This tool synthesizes side channel information, ideal for mono sources or adding depth to existing stereo tracks without compromising the mid channel.

Highlights
  • Stereo widening without phase smearing
  • Synthesizes side channel information
  • Preserves mid channel integrity
  • Flexible for mono and stereo sources
  • Transparent or strong effect options
  • Multiband transient shapers
  • Directional RMS distribution visualization
Features
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Spatializer is a great choice if you want to widen your sounds but need to avoid: • phase smearing in the mono mix • phasing / comb filter effects (from asymmetric channel delays) • or any changes to the mid channel or mono mix The plugin's main focus is to enhance sounds that have little or no side channel information, where traditional widening approaches like mid-side processing can't be effectively used. It also offers more flexibility in case of mixed inputs, widening narrow components without boosting already existing stereo width to extreme levels that would drown out the mid channel, leading to stereo image problems. Spatializer can also be combined with other effects, for example it's excellent for augmenting large-scale reverbs by enhancing the more immediate space or effectively moving the listener closer to the virtual sound source. At large timescales, the plugin takes on some of the qualities of a reverb itself, while keeping the mid channel sharp and free of any reflections. This could either be used as a special effect in and of itself (depending on the transient characteristics of the input), or be blended together with traditional ambience or acoustic space simulation effects. FEATURES: • Synthesis of side channel information where there was none (stereoization of mono sources) • Linear phase mid channel • Capability to deliver both a neutral / transparent response as well as stronger effects • Built-in multiband transient shapers for delivering a more focused response by suppressing outlier reflections • Multiple visualization options: Directional RMS distribution, position and motion • Effects can range from close-proximity / spatial audio effects to larger acoustic space reflections • Baseline frequency response is optimized to maximize flatness, balancing the spectral density of Left, Right, Side channels The built-in selection of subtly tuned presets and the combined psychoacoustic properties of the above features give more leeway to easily experiment with kinds of source material that have traditionally presented difficulties, like tracks with prominent LF content. Due to its ability to provide transparent, subtle and high-clarity responses, as well as good spectral density characteristics, Spatializer can also be included in master bus effects chains. In multi-track setups it can be used in parallel with other positioning methods to bring more variation to the sound stage or to provide additional ways to adjust the mix. For audio demos, visit: www.quantovox.com/sp PLEASE NOTE: • AUv3-compatible host application required • Supported sampling rates: 22.05, 44.1, 48, 96 kHz.

Screenshots

AudioEffX2 screens
Spatializer2 screens

Verdict

The call

The clearest difference is update cadence: AudioEffX at every 5 days against Spatializer's every 2 months. AudioEffX also leads on price ($4.99 vs $9.99) and iOS requirement (8.0 vs 12.1). Spatializer's advantage is review sentiment (91% vs 77%) and ratings volume (27 vs 8). On rating, 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

AudioEffX costs $4.99 and Spatializer $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for AudioEffX against 4.8 for Spatializer. Both are backed by a comparable volume of ratings — 8 and 27 respectively. Written reviews are what separate them: 77% of AudioEffX's written reviews are positive against 91% of Spatializer's.

UpkeepUpdate frequency

AudioEffX ships an update every 5 days, Spatializer every 2 months. The most recent releases landed on September 30, 2026 and September 27, 2026 respectively.

Scorecard5 real differences · 5 level
AudioEffX versus Spatializer: the parameters behind the verdict, then further details
ParameterAudioEffXSpatializer
Price$4.99 — better$9.99
Rating4.9 (8 ratings) — better4.8 (27 ratings)
Positive reviews76.9% of reviews90.9% of reviews — better
Number of ratings827 — better
Update frequencyEvery 5 days — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better12.1
Further details — not scored
Size11 MB13 MB
Age rating4+4+
DeveloperHarry Gohsquantovox

Customer experience

AudioEffX

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews13 reviews
Positive76.9%
Neutral0.0%
Negative23.1%

Spatializer

All ratings27 ratings
Positive96.3%
Neutral0.0%
Negative3.7%
Written reviews11 reviews
Positive90.9%
Neutral9.1%
Negative0.0%

In-app purchases

None

AudioEffX

No in-app purchases

None

Spatializer

No in-app purchases

Questions

Is AudioEffX free?
AudioEffX costs $4.99, with no in-app purchases.
Is Spatializer free?
Spatializer costs $9.99, with no in-app purchases.
Which has better reviews, AudioEffX or Spatializer?
AudioEffX is rated higher. AudioEffX averages 4.9 out of 5 from 8 ratings, while Spatializer averages 4.8 from 27 ratings.
Do AudioEffX or Spatializer have ads?
Neither AudioEffX nor Spatializer shows ads.
Which is updated more often, AudioEffX or Spatializer?
AudioEffX ships an update every 5 days, and Spatializer every 2 months. Most recently, AudioEffX was updated on September 30, 2026 and Spatializer on September 27, 2026.

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