Comparison

QuadroSphere vs Skulptur

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

Head to head
About

QuadroSphere

This audio plugin allows musicians to sculpt immersive soundscapes by controlling stereo placement and effects across four distinct frequency bands. Create dynamic, atmospheric audio with automated movement and morphing between saved settings.

Highlights
  • 4 configurable frequency bands
  • Control stereo separation, level, and pan per band
  • Create and morph between 12 snapshots
  • Modulation control for automated sweeps
  • Per-band effects (Haas, Delay, Reverb, Chorus, Compressor)
  • Convert mono to pseudo-stereo
  • MIDI CC control
Features
Read full description

QuadroSphere is a great tool for bringing an instrument to life by creating a soundscape with a constantly moving sound source. QuadroSphere splits the incoming audio signal into 4 distinct coloured frequency bands using the frequency bar. Each band has an associated coloured sphere allowing you to control the pan, stereo separation and volume level. You can use this plugin as a way to impose subtle control over stereo placement with little or no movement, or go crazy with random automation. Adding effects such as reverb or delay on a specific frequency band can help create a lush atmospheric swirling which surrounds the listener. This is great for musicians trying to create minimalistic ambient or tranquil soundscapes. You can create up to 12 snapshots of the sphere parameters and effect settings, then morph between them at a designated speed (measured in beats). You can also enable continuous randomization mode, and have full control over which spheres and control which parts are automated. You can also use QuadroSphere as a stereo splitter, using the additional outputs to add your own effects to band outputs. Key Features: ○ 4 Configurable frequency bands. ○ Control stereo separation, level and pan for each band. ○ Create up to 12 Snapshots. ○ Morph between various panning, width and frequency band levels. ○ Modulation control for automated sweeps around pan center. ○ Convert MONO signals into a pseudo-stereo image. ○ Per band Haas, Delay, Reverb, Chorus and Compressor. ○ Allows combined and individual per-band audio outputs. ○ Continuous randomized morphing of the stereo field. ○ Built in Preset Manager with drag and drop support. ○ Power and Solo for each band. ○ Controlable morph speeds. ○ Various animated transition modes. ○ Access most options using AU parameters or MIDI CC control.

About

Skulptur

This interactive filter instrument offers a unique way to manipulate sounds with touch-centric controls. Animate and sculpt your audio using 10 surgical filters with kinetic sliders and innovative gestures.

Highlights
  • 10-band surgical filters
  • Kinetic sliders
  • Touch-centric innovations
  • Built-in noise generator
  • LFO mode
  • Multiple UI modes
Features
Read full description

Skulptur is a highly interactive Performance Filterbank designed by Bram Bos and Berlin-based musician Hainbach. It's a 10-band filter instrument unlike any other filterbank you've ever used. Designed for touch with kinetic sliders and other touch-centric innovations, it brings lots of different ways to interact with your sounds. Swipe, throw, slide, push, pull and draw the 10 surgical filters to animate and manipulate your sounds in ways that no other plugin allows. Comes with plugins for iOS, iPadOS and MacOS (13+, Intel and ARM) - Multiple UI modes to play with your sounds - 10 steep, surgical 48dB filters (1 LP + 8 BP + 1 HP) with filter feedback - 4 Filterbank model configurations - Built-in noise generator and high quality input signal saturator - LFO mode, optionally tempo-synchronised - Real world tested as an instrument in numerous live performances by Hainbach Find the manual on ruismaker.com

Screenshots

QuadroSphere4 screens
Skulptur3 screens

Verdict

The call

The clearest difference is price: QuadroSphere at $7.99 against Skulptur's $12.99. QuadroSphere also leads on update cadence (every 3 weeks vs every 2 months). On rating, review sentiment, ratings volume and ads 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

QuadroSphere costs $7.99 and Skulptur $12.99 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 — 5.0 for QuadroSphere against 5.0 for Skulptur. Both are backed by a comparable volume of ratings — 10 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

QuadroSphere ships an update every 3 weeks, Skulptur every 2 months. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
QuadroSphere versus Skulptur: the parameters behind the verdict, then further details
ParameterQuadroSphereSkulptur
Price$7.99 — better$12.99
Rating5.0 (10 ratings)5.0 (8 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings10 — better8
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS13.013
Further details — not scored
Size18 MB3 MB
Age rating4+4+
Developer4Pockets.comBram Bos

Customer experience

QuadroSphere

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Skulptur

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

QuadroSphere

No in-app purchases

None

Skulptur

No in-app purchases

Questions

Is QuadroSphere free?
QuadroSphere costs $7.99, with no in-app purchases.
Is Skulptur free?
Skulptur costs $12.99, with no in-app purchases.
Which has better reviews, QuadroSphere or Skulptur?
QuadroSphere and Skulptur are both rated 5.0 out of 5 on the App Store, from 10 and 8 ratings respectively.
Do QuadroSphere or Skulptur have ads?
Neither QuadroSphere nor Skulptur shows ads.
Which is updated more often, QuadroSphere or Skulptur?
QuadroSphere ships an update every 3 weeks, and Skulptur every 2 months. Most recently, QuadroSphere was updated on November 8, 2026 and Skulptur on October 30, 2026.

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