Velocity Keyboard vs StringKing
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Velocity Keyboard
This app offers a versatile MPE MIDI controller with advanced velocity sensing and multiple interface layouts. It provides extensive MIDI CC control and flexible modes for both MPE and non-MPE synthesizers, enhancing musical expression.
- Advanced velocity sensing algorithm
- Four interface layouts (Keyboard, String, Scale, Drum Pad)
- Standalone app and Audio Unit support
- 8 simultaneous MIDI CC sources
- Smooth MIDI pitch bending
- Custom scale highlighting
- Pitch bend correction algorithm
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Velocity Keyboard is a powerful velocity-sensitive MPE compatible MIDI controller. FEATURES - unique velocity sensing algorithm that tracks touch force like no other app - Four interface layouts: Keyboard, String, Scale, and Drum Pad - runs as an Audio Unit or as a standalone app - 8 simultaneous sources of MIDI CC parameter control: touch area, touch force (on devices that support 3D Touch), touch Y-coordinate, velocity to CC and up to four MIDI CC control knobs - smooth MIDI pitch bending between notes in both string and keyboard layouts - highlight custom scales in any key - dedicated MIDI modes for maximum flexibility when controlling non-MPE compatible synthesizers - pitch bend correction algorithm plays more in-tune with more freedom of expression when bending between notes (compared to similar MIDI controller apps) - can output velocity as a MIDI CC or aftertouch message to better support synths that aren't designed with velocity sensing in mind What does this app do differently from our iFretless apps? - It uses much less RAM because it doesn't load any audio samples - It has MIDI aftertouch controls, so changes in touch pressure and location that occur after after the start of a note can control MIDI CC parameters - It supports highlighting notes in custom scales - It has piano keyboard, scale, and drum pad layout options - It has updated velocity sensing and pitch correction algorithms - It has better visibility, making it feel more playable on smaller screens, or with a larger number of rows and columns
StringKing
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Let StringKing help you find your perfect ideal string set for your favorite guitar, using parameters such as: - (Multi)scale length - Tuning - String count StringKing will display the resulting tensions, and accompanying colors to visually indicate how balanced your composed string set is.
Screenshots
Verdict
The clearest difference is price: StringKing at Free against Velocity Keyboard's $9.99. Velocity Keyboard's advantage is iOS requirement (11.0 vs 14.1). On 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
StringKing is free to download; Velocity Keyboard costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Velocity Keyboard | StringKing |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.8 (101 ratings) — better | — |
| Positive reviews | 82.2% of reviews | — |
| Number of ratings | 101 — better | — |
| Update frequency | Every 9 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.1 |
| Further details — not scored | ||
| Size | 12 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Blue Mangoo Consulting Company Limited | Sigma Delta |
In-app purchases
Velocity Keyboard
No in-app purchases
StringKing
No in-app purchases








