Arp Arpeggiator
One-octave arpeggiator
Only for iPhone
$3.99 · Designed for iPhone. Not verified for macOS.
iPhone
Play any combination of notes and set it in motion — five synth voices, tempo-synced patterns, and one-tap MIDI export to your DAW.
Hold a chord. Arp sets it in motion.
Arp is a one-octave arpeggiator and pocket instrument. Press and hold notes on a single octave of keys, and Arp animates them into tempo-synced patterns — a moving line of light across the keys you're holding. When you find something you love, export it as MIDI in one tap and drop it straight into your DAW.
No menus, no manual. One screen, built to be played.
FIVE VOICES
Warm, Pad, Bass, Pluck, and Bell — five hand-tuned synth voices, from soft ambient swells to bright plucked lines.
PATTERNS THAT PLAY YOUR CHORD
Up, down, up-down, random, and as-played. Hold or latch a chord and shape it live.
FEEL CONTROLS
Tempo-synced rates from whole notes to 1/32, gate length from staccato to legato, BPM with tap tempo.
ONE-TAP MIDI EXPORT
Capture the playing arpeggio as a standard MIDI file and share it to your DAW, sampler, or collaborator. Your idea leaves the app as easily as it arrived.
DESIGNED TO BE CALM
A near-black canvas, a single glowing accent, and light that responds to your touch. No ads, no account, no tracking — nothing between you and the instrument.
Arp is the second instrument from Fecit Audio, makers of Tap.
The developer, Ilan Small, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ilan Small
- Size
- 55.7 MB
- Category
- Music
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Ilan Small
