Comparison

Opera GO vs QuadroSphere

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

Head to head
About

Opera GO

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The must-have app to fully enjoy the Augmented Reality experience Opera GO through Luxembourg City. The Queen of the Night’s darling operas have escaped and are on the loose in the old town. Use this unique opera catching device to track them down, interact with them and bring them home to the worried Queen. Don’t forget your headphones. Opera GO is a mixed reality Opera created by Anne Simon and Anthime Miller for Volleksbühn. Partners - Kreativstuff, Lucilin, De Gudde Wëllen, CNA, Ecole de Musique Régionale Dudelange With the support of - Filmfund Luxembourg, Oeuvre de Secours Grande Duchesse Charlotte, Ville de Luxembourg, Fondation Indépendance, Ministère de la Culture.

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
Currently charting
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

Opera GO4 screens
QuadroSphere4 screens

Verdict

The call

The clearest difference is price: Opera GO at Free against QuadroSphere's $14.99. QuadroSphere's advantage is chart position (#194 vs unranked). On update cadence, ads, in-app purchases 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

Opera GO is free to download; QuadroSphere costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Opera GO ships an update every 2 weeks, QuadroSphere every 3 weeks. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 9 level
Opera GO versus QuadroSphere: the parameters behind the verdict, then further details
ParameterOpera GOQuadroSphere
PriceFree — better$14.99
Rating—5.0 (10 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—10 — better
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
Best chart rank—#194 — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size177 MB18 MB
Age rating4+4+
DeveloperVelvet Flare4Pockets.com

In-app purchases

None

Opera GO

No in-app purchases

None

QuadroSphere

No in-app purchases

Questions

Is Opera GO free?
Opera GO is free to download, with no in-app purchases.
Is QuadroSphere free?
QuadroSphere costs $14.99, with no in-app purchases.
Do Opera GO or QuadroSphere have ads?
Neither Opera GO nor QuadroSphere shows ads.
Which is updated more often, Opera GO or QuadroSphere?
Opera GO ships an update every 2 weeks, and QuadroSphere every 3 weeks. Most recently, Opera GO was updated on October 10, 2026 and QuadroSphere on October 8, 2026.

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