# QuadroSphere vs Robtronik.FM

The clearest difference is price: Robtronik.FM at Free against QuadroSphere's $14.99. QuadroSphere's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.0). On in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | QuadroSphere | Robtronik.FM |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/quadrosphere/id6740915664/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | — |
| Monetization | Paid | — |
| Size | 18 MB | 58 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [4Pockets.com](https://appshunter.io/developer/370131860) | [AccelerateRPM LLC](https://appshunter.io/developer/1805807300) |

## What reviewers say

### QuadroSphere

[App page](https://appshunter.io/ios/app/quadrosphere/id6740915664)

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:** macOS Compatibility

**In-app purchases:** none


### Robtronik.FM

[App page](https://appshunter.io/ios/app/robtronikfm/id6761115505)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is QuadroSphere free?

QuadroSphere costs $14.99, with no in-app purchases.

### Is Robtronik.FM free?

Robtronik.FM is free to download, with no in-app purchases.

### Do QuadroSphere or Robtronik.FM have ads?

Robtronik.FM shows ads; QuadroSphere does not.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*