Scale vs midi
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Scale
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Scale-Up! is intended for music players who want to learn scales efficiently. It offers a simple and clean interface, making sure you stay focused while practicing. - Create and play short scale patterns easily. - Supports guitar, bass, ukulele, and keyboard, with various sound banks and custom tunings. - Connect MIDI instruments. - Customize your interface using custom color sets, just the way you like it. Additionally, connect with other users to share your patterns through an optional networking platform.
midi
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midi-sink models a tray of water with ink floating on it. Every gesture is an exact, area-preserving transformation of the whole sheet β Aubrey Jaffer's mathematical marbling β so the rings stay crisp after a thousand strokes. Two modes. MARBLE MODE is the tray under your hands: tap for a drop, drag to comb, twist two fingers for a vortex, pinch to fold, draw with the Pencil and a wake follows the tip. Plug in a MIDI instrument and it plays into the same water: an MPE controller's strike, pressure, glide and slide become drop, feed, comb and hue; a wind controller draws a single calligraphic line; any keyboard plays drops on the circle of fifths. PLAY MODE turns the iPad into an MPE instrument. A pitch lattice β chromatic grid, JankΓ³ or piano grid β sits under your fingers; every touch is a joystick (sideways bends in semitones, push to feed ink, pull back to stir). The Apple Pencil plays legato across the keys with real force as velocity, its barrel roll deepens vibrato and the Pencil Pro's squeeze is the sustain pedal. A floating strip carries pitch, mod, two assignable wheels and sustain on the MPE master channel. The stream goes out over a virtual CoreMIDI source (also to a USB-tethered Mac), the MIDI network session and Bluetooth LE MIDI, so any DAW or synth records a standard MPE performance while the water paints it. Made for MPE controllers β ROLI Piano and Seaboard, Expressive E Osmose β the ROLI Airwave's gesture CCs, wind controllers (Roland Aerophone, Odisei Travel Sax) and classic keyboards. midi-sink makes no sound of its own: it is a visualizer and a controller. Free software (AGPL-3.0). Collects nothing.
Screenshots
Verdict
The clearest difference is iOS requirement: midi at 16.0 against Scale's 18.6. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Scale | midi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | β |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 16.0 β better |
| Further details β not scored | ||
| Size | 46 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomas Fernandes | Vibetuned |
In-app purchases
Scale
No in-app purchases
midi
No in-app purchases









