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Built for Duo

Chiptune

Compose NES-style music with a step sequencer and export songs as audio, MIDI or video.

Individuation Labs LLC · Music & Audio · $0.99

View on the App StoreSave

On iPhone Duo

Developer screenshot of iPhone Duo inner display with sequencer grid beside sound controls and note keys
iPhone Duo screenshot
Developer screenshot of song playback in the split iPhone Duo layout
iPhone Duo screenshot

iPhone screenshots

Chiptune — iPhone screenshots 1
Chiptune — iPhone screenshots 2
Chiptune — iPhone screenshots 3
Chiptune — iPhone screenshots 4
Chiptune — iPhone screenshots 5
Chiptune — iPhone screenshots 6

iPad screenshots

Chiptune — iPad screenshots 1
Chiptune — iPad screenshots 2
Chiptune — iPad screenshots 3
Chiptune — iPad screenshots 4
Chiptune — iPad screenshots 5
Chiptune — iPad screenshots 6

How it uses iPhone Duo

On the unfolded inner display in landscape, the developer places the pattern grid on one side of the fold and sound controls and note keys on the other.

What’s New

Version 1.3.1 ·

New: Chiptune fits iPhone Duo. • On the inside screen, held sideways, the grid sits on one side of the fold and the sound controls and keys on the other. • Grid videos now scroll at a steady speed, so the notes glide past the playhead instead of jumping from row to row.

About this app

Compose NES-inspired music with a step sequencer that synthesizes two pulse channels, triangle and noise in real time. Build 4–64-step patterns, arrange them into songs, shape each sound, and export WAV, MIDI or video. The developer documents a landscape Duo layout with the pattern grid on one side of the fold and sound controls and note keys on the other. Also supports landscape iPad layouts and hardware-keyboard tracker controls.

App Store descriptionWritten by the developer.

Chiptune is a step sequencer for writing music in a style of old game consoles. Simply tap a note, tap a cell in the grid, and it will play sounds from one of four NES-style channels. Chiptune has two pulses, a triangle and noise. Each channel is synthesized live rather than sampled. Patterns are customizable from 4 to 64 steps and can be chained into an arrangement. This lets a piece go from just a single loop into a full song with intros, verses, choruses, etc. WRITE • Compose on a grid of notes with 4 to 64 steps per pattern • Customize your track to cut notes short or let them ring • Set the tempo by typing it or nudging it a step at a time • Easily undo any changes SOUND • Two pulse channels with four pulse widths, from thin and nasal to full square • A triangle channel ideal for basslines • Tunable noise for drums like a hi-hat or a low rumble • Volume, decay, and arpeggio controls per channel, so one channel can fake a chord • Sounds come with basic presets ARRANGE • Create sections with a named pattern and a repeat count • Loop one pattern while editing or play the whole song • Add multiple tracks of any sound when four channels aren't enough • Custom iPad specific layout in portrait and landscape SAVE AND SHARE • Songs autosave as you work so you never lose anything • Duplicate a song to try something slightly different • Export any song as a WAV file with a seamless loop or with the last notes ringing out • Export as a MIDI file to keep working on your notes in another music app • Export a video of your song playing, as a scrolling grid or a game cartridge, to post on Instagram, TikTok or YouTube Chiptune works fully offline and never asks for a subscription. No account, no ads, no tracking.

Highlights

  • Live NES-style synthesis: two pulse waves, triangle, noise
  • 4–64-step patterns and arrangement sections with repeat counts
  • Volume, decay, pulse-width and arpeggio controls; presets
  • Add tracks beyond the initial four channels
  • WAV export with seamless looping or trailing notes; MIDI and video export
  • Autosave; offline use; no account or ads
  • Developer-documented Duo inner-display split and hardware-keyboard tracker controls

Chiptune on iPhone Duo: FAQ

Is Chiptune optimized for iPhone Duo?

Yes. Chiptune is Built for Duo: it uses the fold, Split View or the outer display. Verified on October 28, 2026 (App Store text).

What does Chiptune look like on iPhone Duo?

On the unfolded inner display in landscape, the developer places the pattern grid on one side of the fold and sound controls and note keys on the other.

How much does Chiptune cost?

Chiptune costs $0.99 on the App Store.

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