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Screenshots

  • Billie Tracker screenshot 1
  • Billie Tracker screenshot 2
  • Billie Tracker screenshot 3
  • Billie Tracker screenshot 4

About Billie Tracker

Billie Tracker is a groovebox: a step sequencer, synth instruments, a sampler and a mixer, built as one instrument for your phone or tablet. You write music in a grid. Notes go into patterns, patterns chain into sections, and sections line up into a song, so a full track grows out of small pieces you can reuse and rearrange. Trackers have worked this way for decades. If you have used one, this will feel like home. If you haven't, a built-in tutorial walks you through your first pattern, and every screen has help one key away. It is not tied to one sound. Shape the synths from clean tones to heavy drive, sample anything and play it back as an instrument, and make whatever you want to make: techno, ambient, hip hop, pop, or the 8-bit styles trackers are known for. Rows hold up to four notes, not just one. Every instrument is polyphonic, so a chord goes into the grid the same way a single note does. Hold one on a MIDI keyboard and it lands across the row's note lanes, quantized and in key. What you get: - A step sequencer for notes, instruments, volume and effects, with chains and a song view for arrangement - Up to four note lanes on every row, so chords are typed in like single notes, on any instrument - Synth instruments you can shape: timbre, color, filter, drive, envelopes and LFOs - A sampler that records straight into the app, so your own sounds sit next to the synths - A mixer with per-track levels and sends - BOUNCE and STEMS, so a finished song leaves the app as audio - Bundles: a song and every sample it uses travel as one file - A control surface built for tracker speed. Hold one key, press another, fast. Rearrange the layout to fit your hands, or plug in a hardware keyboard or game controller - Themes, KEY and SCALE settings, and a HELP key that explains whatever you are looking at Your songs are ordinary files. There is no account and nothing to sign into. Send a song to a friend, email one to yourself, or move it around in your file manager. Nothing is uploaded to us and nothing is locked to us. Billie Tracker is made by Billie Workers' Co-op. The people using it steer what gets built, and the Discord is the fastest way to reach us.

Ratings & reviews

5.0

5 ratings

5 ★ 100% 4 ★ 0% 3 ★ 0% 2 ★ 0% 1 ★ 0%

What’s new

Version 1.14.0 · Updated September 20, 2026

What's New in 1.14.0 - RET now behaves consistently across empty rows and phrase boundaries, with RTP adding pitch steps per repeat. Existing patterns may repeat longer; use RET00 where they should end. - MIDI and note-lane editing are more consistent: KEY FOLLOW/FREE for MIDI, matching entry and editing across N1–N8, and Euclidean fill on selected lanes. Select INST/VOL to copy or move them with notes.

App privacy

The developer, Billie Cooperative, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Identifiers: User ID
  • Usage Data: Product Interaction
  • User Content: Audio Data
  • Diagnostics: Crash Data, Performance Data

Used for: Analytics, App Functionality

Alternatives to Billie Tracker

Looking for apps like Billie Tracker? Here are 6 similar apps on the App Store. The highest rated is 1981 FM: 80s Track Generator (5.0/5), and all 6 are free to download.

Billie Tracker vs. alternatives
App Rating Price Last updated
Billie Tracker 5.0 / 5 (5 ratings) Free September 20, 2026
Wavepocket 4.5 / 5 (2) Free Aug 18, 2026
KAGARIBI: AUv3 Synth 4.5 / 5 (4) Free Sep 15, 2026
2099 Techno: Generative Synth – Free Sep 25, 2026
1981 FM: 80s Track Generator 5.0 / 5 (1) Free Sep 25, 2026
Pendulums: Chaos Melody 5.0 / 5 (3) Free Sep 11, 2026
95 LoFi: Generative Beat Maker 5.0 / 5 (4) Free Sep 25, 2026