Comparison

bFaaaP Pro & Switch vs Harmonics//

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

Head to head
About

bFaaaP Pro & Switch

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
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bFaaaP Pro & Switch turns head movements into piano sustain-pedal control, so you can play the pedal completely foot-free. It is the companion app for the bFaaaP barrier-free assist pedals — one app that drives two devices, depending on your instrument: - bFaaaP Pro (acoustic pianos): a motorized device that physically presses the real sustain pedal. It anchors with an inflatable "airback" — non-destructive, no bolting — and self-calibrates. - bFaaaP Switch (digital pianos): switches the sustain electronically through the pedal jack. Small, light and motor-free. Using the front camera, the app detects the angle of your head and converts it into pedal ON/OFF signals, sent over Bluetooth Low Energy to the bFaaaP device on your instrument. The same head-angle control works for both devices. This lets people who cannot use a foot pedal — including wheelchair users and players with limited leg mobility — enjoy expressive, pedal-based performance. WHO IT IS FOR - Pianists who cannot operate a foot pedal - Music therapy, special-needs and inclusive music education - Anyone exploring accessible, barrier-free music making HOW IT WORKS - Detects head angle with the front TrueDepth camera (ARKit face tracking) - Converts the angle into sustain pedal ON/OFF - Sends the signal over Bluetooth Low Energy to bFaaaP Pro or bFaaaP Switch PRIVACY - The camera is used ONLY to read your head/face angle. - That value is processed on-device, used to generate the pedal signal, then discarded. - No face data, image or video is stored or shared with anyone. AN OPEN-SOURCE PROJECT bFaaaP is an open-source, open-hardware barrier-free project by Shishido & Associates. The source code, hardware build details, the story behind it, and ways to contribute are public: - Project & community: https://bfaaap.com - Source code (open source): https://github.com/bfaaap/bfaaap_opensource - Developer & related services: https://saaipf.com SEE IT IN ACTION Watch bFaaaP being played in real concerts and recitals, with setup and how-to guides: - How the system works (overview): https://youtu.be/iyRqPa8TLgE - Live concert — grand piano + bFaaaP Pro: https://youtu.be/V3cXeNW9jXY - How to use bFaaaP Switch (electronic piano): https://youtu.be/XOVENtBsOp4 - Full performance & demo collection (English): https://saaipf.com/en/bfaaap/#videos - Build & set up your own — step-by-step guide (English): https://bfaaap.com/en/build/ - All videos (YouTube channel): https://www.youtube.com/channel/UCcAvTy1k8rHs2WrEKPx1amg The app's source code is open and free on GitHub, so anyone can build and run it themselves. This App Store version is free, too — just install it and start playing. If you would like to help keep bFaaaP free and open for everyone, donations and support are always welcome (see the links above and at saaipf.com). Thank you for your support. You will need a bFaaaP Pro or bFaaaP Switch device to control a real pedal. Both are open hardware — visit bfaaap.com to learn how they are built and how to take part.

About

Harmonics//

Effortlessly improvise music with evolving backing tracks across various genres. Discover melodies and create expressive soundscapes without needing music theory knowledge. Designed for both experienced musicians and beginners to explore sound and find creative flow.

Highlights
  • Generate backing tracks across genres
  • Intuitive melodic keyboards for improvisation
  • Explore diverse musical moods
  • Dynamic accompaniment with evolving grooves
  • Adjust tempo, energy, and instrumentation
  • Minimalist interface for creativity
Features
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Harmonics// transforms improvisation into an effortless musical experience. Choose a mood, select a groove, and instantly begin playing over rich, evolving backing tracks inspired by jazz, funk, neo soul, ambient, pop, Latin, and more. Whether you are an experienced musician or someone simply exploring sound for the first time, Harmonics// helps you discover melodies that feel expressive, emotional, and alive. Designed to feel inspiring instead of technical, Harmonics// generates dynamic accompaniment with tasteful drums, basslines, harmony, and atmospheric textures that continuously evolve while you play. Every session becomes a unique musical journey. FEATURES • Instantly generate backing tracks across multiple genres and vibes • Improvise using intuitive melodic keyboards designed to help you sound musical immediately • Explore moods ranging from cinematic and ambient to funky, soulful, and jazzy • Dynamic accompaniment with evolving grooves, fills, and musical variation • Built-in presets inspired by classic jazz standards, neo soul grooves, funk jams, Latin rhythms, and modern atmospheric textures • Adjust tempo, energy, instrumentation, and feel in real time • Create relaxing soundscapes, expressive solos, or energetic jam sessions • Minimal, immersive interface designed for flow and creativity • No music theory knowledge required Whether you want to practice improvisation, relax with expressive music, discover new melodic ideas, or simply lose yourself in creative flow, Harmonics// gives you an instant connection to musical inspiration. Tap into the flow.

Screenshots

bFaaaP Pro & Switch4 screens
Harmonics//3 screens

Verdict

The call

The clearest difference is price: bFaaaP Pro & Switch at Free against Harmonics//'s $2.99. bFaaaP Pro & Switch also leads on iOS requirement (14.5 vs 18.6). On ads, in-app purchases, monetization model 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

bFaaaP Pro & Switch is free to download; Harmonics// costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 7 level
bFaaaP Pro & Switch versus Harmonics//: the parameters behind the verdict, then further details
ParameterbFaaaP Pro & SwitchHarmonics//
PriceFree — better$2.99
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 20 months—
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.5 — better18.6
Further details — not scored
Size1 MB151 MB
Age rating4+4+
DeveloperTomoyuki ShishidoCHASE PLACE LLC

In-app purchases

None

bFaaaP Pro & Switch

No in-app purchases

None

Harmonics//

No in-app purchases

Questions

Is bFaaaP Pro & Switch free?
bFaaaP Pro & Switch is free to download, with no in-app purchases.
Is Harmonics// free?
Harmonics// costs $2.99, with no in-app purchases.
Do bFaaaP Pro & Switch or Harmonics// have ads?
Neither bFaaaP Pro & Switch nor Harmonics// shows ads.

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