Comparison

Spatializer vs Qithesizer

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

Head to head
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.

About

Qithesizer

This advanced music synthesizer combines virtual analog, wavetable, and physical modeling sound engines. It offers extensive modulation capabilities, a built-in sequencer, and on-screen keyboard for creating complex sounds.

Highlights
  • Multiple sound engines (virtual analog, wavetable, physical modeling)
  • Extensive modulation sources and destinations
  • Full MIDI mapping
  • 16-step sequencer with pattern editor
  • Waveform and dynamic visualizations
  • On-screen keyboard
Features
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Meet Qithesizer, a powerful multi-engine hybrid software synthesizer. Designed with wind controller in mind, it combines virtual analog, wavetable, and physical modeling in one. 【Features】 ∙ Multiple sound engines: basic waveforms, hundreds of digital waveforms, multiple physical models ∙ 11 modulation sources, 27 modulation destinations ∙ Full midi mapping ∙ 16-step sequencer with powerful pattern editor, save patterns by preset ∙ Waveform and dynamic visualizations ∙ Full-size, on-screen keyboard Our site: www.robkoo.com Facebook Page: @RobkooMusic Twitter: @Robkoo_Music Feedback: cuimingwei@robkoo.com

Screenshots

Spatializer2 screens
Qithesizer4 screens

Verdict

The call

The clearest difference is rating: Spatializer at 4.8 against Qithesizer's 4.1. Spatializer also leads on review sentiment (91% vs 77%) and price ($9.99 vs $12.99). Qithesizer's advantage is update cadence (fortnightly vs every 2 months). 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

Spatializer costs $9.99 and Qithesizer $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Spatializer holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 27 and 11 respectively. Written reviews point the same way: 91% of Spatializer's written reviews are positive against 77% of Qithesizer's.

UpkeepUpdate frequency

Spatializer ships an update every 2 months, Qithesizer fortnightly. The most recent releases landed on September 27, 2026 and September 22, 2026 respectively.

Scorecard5 real differences · 5 level
Spatializer versus Qithesizer: the parameters behind the verdict, then further details
ParameterSpatializerQithesizer
Price$9.99 — better$12.99
Rating4.8 (27 ratings) — better4.1 (11 ratings)
Positive reviews90.9% of reviews — better76.9% of reviews
Number of ratings27 — better11
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.1 — better15.0
Further details — not scored
Size13 MB29 MB
Age rating4+4+
DeveloperquantovoxRobkoo Information & Technologies Co., Ltd.

Customer experience

Spatializer

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

Qithesizer

All ratings11 ratings
Positive72.7%
Neutral9.1%
Negative18.2%
Written reviews13 reviews
Positive76.9%
Neutral0.0%
Negative23.1%

In-app purchases

None

Spatializer

No in-app purchases

None

Qithesizer

No in-app purchases

Questions

Is Spatializer free?
Spatializer costs $9.99, with no in-app purchases.
Is Qithesizer free?
Qithesizer costs $12.99, with no in-app purchases.
Which has better reviews, Spatializer or Qithesizer?
Spatializer is rated higher. Spatializer averages 4.8 out of 5 from 27 ratings, while Qithesizer averages 4.1 from 11 ratings.
Do Spatializer or Qithesizer have ads?
Neither Spatializer nor Qithesizer shows ads.
Which is updated more often, Spatializer or Qithesizer?
Spatializer ships an update every 2 months, and Qithesizer fortnightly. Most recently, Spatializer was updated on September 27, 2026 and Qithesizer on September 22, 2026.

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