midi vs Audio+MIDI Player

midi-sink models a tray of water with ink floating on it. Every gesture is an exact, area-preserving transformation of the whole sheet — Aubrey Jaffer's mathematical marbling — 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 — chromatic grid, Jankó or piano grid — 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 — ROLI Piano and Seaboard, Expressive E Osmose — 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.

MIDI and music, in one player. Audio+MIDI Player plays MIDI files, MusicXML scores and audio files from a single library. Play them on the iPhone's own grand piano, or send them to your Mac or digital piano — one output button switches where the notes go. ■ MIDI, scores and audio • Standard MIDI files (.mid), with tempo, meter and key • MusicXML (.musicxml / .mxl), played with dynamics, accents, fermatas and more • mp3, AAC / m4a, WAV, AIFF, CAF, FLAC and ALAC — hi-res FLAC and ALAC as they are ■ On the iPhone, or on your MIDI gear • The built-in grand piano, or an imported General MIDI SoundFont • Wi-Fi (network MIDI / RTP-MIDI) to your Mac or DAW • Bluetooth LE MIDI to digital pianos and wireless MIDI devices • Low-latency USB to a Mac or MIDI gear over one cable • Connects to MIDI Speaker on your Mac automatically ■ A player that's fun to watch • Live spectrum analyzer • 12 effects including vinyl record, cassette, aurora, shooting stars, fireworks, galaxy, snow globe, VU meters and piano keys • Effects like the piano keys follow the notes — even for audio files, analyzed right on the iPhone • Playback speed 0.5–2.0× ■ A library that finds it fast • Group by album, artist, year and more • Search, sort and favorites • Cover art and song info editing • Thumbnail and list layouts, and editing many songs at once • Automatic folders by artist, album, year or type ■ Keep your songs where you like • On this iPhone, in iCloud Drive, or in a Files app folder (Google Drive, OneDrive, Dropbox…) • With iCloud Drive, songs download when played, and ones you haven't played can be removed from the iPhone automatically • Favorites, playlists and song info sync between devices using the same place ■ Playlists • Your songs in your order, reordered by dragging • Shuffle and repeat ■ Songs from anywhere • Import many files at once from the Files app or iCloud Drive • "Open in Audio+MIDI" from other apps' share sheets • Take just the sound of a video in Photos • Copy from the Finder on a Mac over File Sharing ■ Widgets and the Lock Screen • Home Screen widgets (small and medium) show and control what's playing, with the spectrum • Dress up the medium widget with classic skins (.wsz) ■ Apple Watch • See what's playing, and play, pause, skip or move through the song from your wrist • Pick from songs, favorites and playlists, and switch the output and the effect ■ Share songs via iCloud • "Share to iCloud" hands songs to our piano app Lesson One and MIDI Speaker Every feature is free (ads appear on the Library and Settings screens). Available in English, Japanese, German, Spanish, French, Italian, Korean, Portuguese, Russian and Simplified Chinese.