Comparison

Rotten Pool Verb vs QuadroSphere

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

Head to head
About

Rotten Pool Verb

This app offers a unique and characterful reverb effect, capturing the natural acoustics of an abandoned swimming pool and its locker rooms. It provides extensive control over reverb blending, saturation, and filtering for creative sound design.

Highlights
  • Natural reverb from abandoned pool
  • Long and short reverb blending
  • Saturators for added character
  • Variable predelay and decay
  • Hi-cut/low-cut filtering
  • Presets from Kristian Kohle
Features
Currently charting
Read full description

The most beautiful yet disturbingly dirty sounding reverb ever! When Producer Kristian Kohle found this huge abandoned swimming pool he just had to capture it’s unique sound! This pool had been rotting for years already when Kristian entered this lost place armed with his favorite microphones to capture the highly complex, natural reverb of this creepy place. Key Features: - Long and short reverb blending - 6 natural, long reverbs captured in an old, huge, abandoned pool - 2 short reverbs from the pool's locker rooms - 2 saturators for adding extra character - Variable predelay and decay - Hi-cut/low-cut Filtering with pre/post switch - A pack of presets from Kristian Kohle Available in AUv3 and standalone

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.

Screenshots

Rotten Pool Verb4 screens
QuadroSphere4 screens

Verdict

The call

The clearest difference is review sentiment: QuadroSphere at 100% against Rotten Pool Verb's 50%. QuadroSphere also leads on rating (5.0 vs 4.3). Rotten Pool Verb's advantage is price ($3.49 vs $14.99) and chart position (#189 vs unranked). 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

CostPrice · In-app purchases · Ads · Monetization

Rotten Pool Verb costs $3.49 and QuadroSphere $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

QuadroSphere holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 7 and 10 respectively. Written reviews point the same way: 50% of Rotten Pool Verb's written reviews are positive against 100% of QuadroSphere's.

UpkeepUpdate frequency

Rotten Pool Verb ships an update monthly, QuadroSphere every 3 weeks. The most recent releases landed on October 25, 2026 and October 20, 2026 respectively.

Scorecard4 real differences · 7 level
Rotten Pool Verb versus QuadroSphere: the parameters behind the verdict, then further details
ParameterRotten Pool VerbQuadroSphere
Price$3.49 — better$14.99
Rating4.3 (7 ratings)5.0 (10 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings710 — better
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#189 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size104 MB18 MB
Age rating4+4+
DeveloperAurora DSP4Pockets.com

Customer experience

Rotten Pool Verb

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

QuadroSphere

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

In-app purchases

None

Rotten Pool Verb

No in-app purchases

None

QuadroSphere

No in-app purchases

Questions

Is Rotten Pool Verb free?
Rotten Pool Verb costs $3.49, with no in-app purchases.
Is QuadroSphere free?
QuadroSphere costs $14.99, with no in-app purchases.
Which has better reviews, Rotten Pool Verb or QuadroSphere?
QuadroSphere is rated higher. Rotten Pool Verb averages 4.3 out of 5 from 7 ratings, while QuadroSphere averages 5.0 from 10 ratings.
Do Rotten Pool Verb or QuadroSphere have ads?
Neither Rotten Pool Verb nor QuadroSphere shows ads.
Which is updated more often, Rotten Pool Verb or QuadroSphere?
Rotten Pool Verb ships an update monthly, and QuadroSphere every 3 weeks. Most recently, Rotten Pool Verb was updated on October 25, 2026 and QuadroSphere on October 20, 2026.

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