Keyborg Pro vs Scale Numbers Piano
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Keyborg Pro
This app transforms any MIDI keyboard into a versatile instrument, offering modes for pedal steel guitar, 6-string guitar, and advanced chord playing. It caters to both beginners and experienced musicians with intuitive chord-based controls.
- Pedal steel guitar simulation
- 6-string guitar simulation
- Advanced chord playing
- Multiple play modes
- Intuitive chord-based controls
- Built-in help and tips
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The Keyborg Pro technology offers five modes of play, as follows. 1. E-Z Pedal Steel Keyborg: transforms any MIDI keyboard into a fully functional pedal steel guitar, but one that is played just like a standard piano keyboard using basic piano chords. Simple enough for novices, yet sophisticated enough for the most advanced players. 2. Pedal Steel Keyborg: transforms any MIDI keyboard into a fully functional pedal steel guitar, but one that is played with all the simplicity of a standard 6-string guitar using basic barre chords. Perfect for guitar players. 3. Barre Chord Keyborg: transforms any MIDI keyboard into a fully functional 6-string guitar using basic barre chords with up/down strumming of 1-6 adjacent strings. 4. Rob’s Barre Chord Keyborg: transforms any MIDI keyboard into a fully functional 6-string guitar using basic barre chords with up/down strumming of 1-6 adjacent strings, while using a single hand for both fretting and strumming/plucking. 5. E-Z Chord Keyborg: enables advanced chord playing on any MIDI keyboard using basic chord maneuvers. For more information on the Keyborg Pro app, be sure to check out its built-in Read Me, Help, and Tips. For video demonstrations of the Keyborg Pro technology, you can visit our KeyborgPro.com website.
Scale Numbers Piano
Compose melodies and chords simultaneously on your device. Record and loop your creations for improvisation and songwriting. Learn music theory and play popular songs with a unique scale number system, no prior knowledge needed.
- Play melody and chords together
- Record and live loop compositions
- Theory lessons and songbook
- Scale number system for easy learning
- Built-in sampler instruments
- MIDI input for DAWs
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This app lets you play melody and chords at the same time on your iPhone or iPad. Record and live loop your compositions for improvising or songwriting. Included theory lessons and songbook with hundreds of famous tunes which you can play with no previous music theory background. Great for songwriters, singers, producers, music students or if you just want to play some recognisable tunes. The whole app is based around simple scale numbers, which are the gold standard for understanding music. Either use the built-in sampler instruments to play on your device, or connect to your DAW for full midi input to your favourite synths. See a demo video of the app's features at scalenumbers.com __ Scalenumbers does not collect any user data: https://scalenumbers.com/termsandprivacy __ If you're having an issue, please email me at support@scalenumbers.com rather than leaving a review, as apple doesn't send developers any alerts when reviews are left, so I won't know you've tried to contact me.
Screenshots
Verdict
The clearest difference is rating: Keyborg Pro at 5.0 against Scale Numbers Piano's 4.2. Keyborg Pro also leads on in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.0). Scale Numbers Piano's advantage is ratings volume (12 vs 1). On price, update cadence, ads 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
Both are free to download. Scale Numbers Piano sells 1 one-off in-app purchase. Keyborg Pro asks for nothing beyond the download.
Keyborg Pro holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Scale Numbers Piano has 12 ratings behind it against 1, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Keyborg Pro | Scale Numbers Piano |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.2 (12 ratings) |
| Positive reviews | — | 65.0% of reviews |
| Number of ratings | 1 | 12 — better |
| Update frequency | Fortnightly | Fortnightly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 775 MB | 340 MB |
| Age rating | 4+ | 4+ |
| Developer | GARY POGODA | Scale Degrees LTD |
Customer experience
Keyborg Pro
Scale Numbers Piano
In-app purchases
Keyborg Pro
No in-app purchases
Scale Numbers Piano
- Full Version$2.99
Questions
Is Keyborg Pro free?
Is Scale Numbers Piano free?
Which has better reviews, Keyborg Pro or Scale Numbers Piano?
Do Keyborg Pro or Scale Numbers Piano have ads?
Which is updated more often, Keyborg Pro or Scale Numbers Piano?
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