Comparison

Billie Tracker vs KAGARIBI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Billie Tracker

Create music with a powerful groovebox featuring a step sequencer, synthesizers, and a sampler. Arrange patterns into songs, shape unique sounds, and export your finished tracks. Designed for intuitive music production on mobile devices.

Highlights
  • Step sequencer for notes and instruments
  • Shapeable synth instruments
  • In-app sampler for recording sounds
  • Mixer with per-track controls
  • Song arrangement and export options
  • Hardware controller support
Features
Read full description

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 eight 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 eight 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.

About

KAGARIBI

This music creation tool allows users to shape and understand sound with a powerful synthesizer and an integrated sound anatomy feature. It offers extensive sound design capabilities, MIDI support, and advanced tuning options for both standalone use and as an AUv3 instrument.

Highlights
  • Dual oscillators with analog waveforms and wavetables
  • Extensive modulation matrix and effects suite
  • Integrated Sound Anatomy for sound explanation
  • Support for MPE and MIDI 2.0
  • Advanced tuning systems beyond 12-TET
  • Offline WAV export
  • Live Safe mode for reduced audio dropouts
Features
Read full description

Play a sound. Shape it. Understand why it sounds that way. KAGARIBI is a free synthesizer for iPhone and iPad with no ads, tracking, account, or network connection required. Play it standalone or load it as an AUv3 instrument. CREATE YOUR SOUND • Two oscillators with analog waveforms and six wavetable families • Up to seven-voice unison, FM, ring modulation, and hard sync • Six filter types, three envelopes, two LFOs, and an eight-slot modulation matrix • Drive, phaser, chorus, delay, reverb, compressor, and limiter • Arpeggiator and four performance macros UNDERSTAND IT — SOUND ANATOMY Sound Anatomy reads the patch you are playing and explains why it sounds the way it does. Connect what you hear to unison, filters, envelopes, LFOs, effects, and more—without leaving the instrument. PLAY AND PRODUCE • 30 factory presets • Multitouch keyboard, Hold, and Arpeggiator • MPE and MIDI 2.0, plus USB and Bluetooth MIDI input • AUv3 host automation for 95 parameters • One preset library shared between the app and AUv3 • A/B comparison, search, favorites, and a recoverable trash • Offline 48 kHz / 24-bit WAV export BEYOND 12-TET Explore 16 included tunings—from just intonation and Pythagorean to Japanese scales, 19/24/31-EDO, and Bohlen–Pierce. Import Scala .scl and .kbm files and set reference pitch from A=415 to 466 Hz. READY FOR LIVE PLAY Live Safe watches real-time processing headroom and adjusts the voice limit when needed to reduce the risk of audio dropouts. Choose Studio or Offline HQ when the session calls for more detail. Your data stays on your device. KAGARIBI includes no third-party ad SDKs, tracking, or network transmission.

Screenshots

Billie Tracker4 screens
KAGARIBI4 screens

Verdict

The call

The clearest difference is review sentiment: Billie Tracker at 100% against KAGARIBI's 0%. Billie Tracker also leads on rating (5.0 vs 4.5) and iOS requirement (15.1 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Billie Tracker holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews point the same way: 100% of Billie Tracker's written reviews are positive against 0% of KAGARIBI's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 7 level
Billie Tracker versus KAGARIBI: the parameters behind the verdict, then further details
ParameterBillie TrackerKAGARIBI
PriceFreeFree
Rating5.0 (5 ratings) — better4.5 (4 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings5 — better4
Update frequencyEvery 2 daysEvery 2 days
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size57 MB5 MB
Age rating4+4+
DeveloperBillie CooperativeCode and DESIGN inc.

Customer experience

Billie Tracker

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

KAGARIBI

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews2 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

Billie Tracker

No in-app purchases

None

KAGARIBI

No in-app purchases

Questions

Is Billie Tracker free?
Billie Tracker is free to download, with no in-app purchases.
Is KAGARIBI free?
KAGARIBI is free to download, with no in-app purchases.
Which has better reviews, Billie Tracker or KAGARIBI?
Billie Tracker is rated higher. Billie Tracker averages 5.0 out of 5 from 5 ratings, while KAGARIBI averages 4.5 from 4 ratings.
Do Billie Tracker or KAGARIBI have ads?
Neither Billie Tracker nor KAGARIBI shows ads.
Which is updated more often, Billie Tracker or KAGARIBI?
Billie Tracker ships an update every 2 days, and KAGARIBI every 2 days. Most recently, Billie Tracker was updated on October 17, 2026 and KAGARIBI on October 12, 2026.

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