# bFaaaP Pro & Switch vs Harmonic Explorer

The clearest difference is price: bFaaaP Pro & Switch at Free against Harmonic Explorer's $0.99. Harmonic Explorer's advantage is update cadence (every 7 months vs every 20 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

bFaaaP Pro & Switch is free to download; Harmonic Explorer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

bFaaaP Pro & Switch ships an update every 20 months, Harmonic Explorer every 7 months. The most recent releases landed on October 4, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | bFaaaP Pro & Switch | Harmonic Explorer |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 7 months** |
| Monetization | Paid | — |
| Size | 1 MB | 2 MB |
| Requires iOS | **14.5** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tomoyuki Shishido](https://appshunter.io/developer/1422564904) | [Philippe Zay](https://appshunter.io/developer/1200498230) |

## What reviewers say

### bFaaaP Pro & Switch

[App page](https://appshunter.io/ios/app/bfaaap-pro-and-switch/id1545866059)

This app works with a special device to allow individuals with leg disabilities, young children, and the elderly to play the piano with sustained tones using head movements. An iOS device detects head motion and transmits signals to activate an electric piano pedal.

**Highlights:** Head motion detection via iOS device, Sustained piano tones without foot pedal, Electric piano pedal activation, Accessibility for leg disabilities, User-friendly setup guide

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

**In-app purchases:** none


### Harmonic Explorer

[App page](https://appshunter.io/ios/app/harmonic-explorer/id6747025974)

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

**In-app purchases:** none


## Frequently asked questions

### Is bFaaaP Pro & Switch free?

bFaaaP Pro & Switch is free to download, with no in-app purchases.

### Is Harmonic Explorer free?

Harmonic Explorer costs $0.99, with no in-app purchases.

### Do bFaaaP Pro & Switch or Harmonic Explorer have ads?

Neither bFaaaP Pro & Switch nor Harmonic Explorer shows ads.

### Which is updated more often, bFaaaP Pro & Switch or Harmonic Explorer?

bFaaaP Pro & Switch ships an update every 20 months, and Harmonic Explorer every 7 months. Most recently, bFaaaP Pro & Switch was updated on October 4, 2026 and Harmonic Explorer on September 21, 2026.

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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.*