Comparison

Billie Tracker vs ARPJAM Player

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 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.

About

ARPJAM Player

This app allows you to queue music tracks and set individual playback durations. It automatically fades out the current track and transitions to the next, ensuring consistent loudness and background playback. Explore a library of published tracks or import your own.

Highlights
  • Queue and time music tracks
  • Automatic track fading and transition
  • Matched loudness for consistent volume
  • Background playback with screen off
  • Browse and import music library
  • Dynamic music generation engine
Features
Read full description

ARPJAM Player is a device for leaving your JAMs running. Line up the JAMs you want to hear and give each one a play time. When the time is up it fades out on its own and hands over to the next one. Nothing else to do. ■ For as long as you like Play times run from one minute to twelve hours, set on a reel. Leave one JAM running all afternoon, or cut them short and keep moving. It is built for the kind of listening that lasts a whole opening shift. ■ Matched loudness JAMs vary in level. Each one is measured once when you add it, and matched on playback — the loud ones come down, the quiet ones come up. No sudden jump when the next one starts. Nothing chases the level while the music plays, so the volume never moves mid-performance. ■ With the screen off Background playback is supported. Lock the screen and it keeps going. Play, pause and skip from the Lock Screen or Control Center. ■ JAM Library Open the JAM Library from inside the app and add published JAMs directly. Browse by genre and see the artist, the notes, the BPM and the key. Official JAMs and submitted JAMs sit side by side. You can also import .arpjam files stored on your device, including files written by the earlier ARPJAM. ■ It never plays the same way twice The ARPJAM engine is not playing back a fixed score. It builds the performance as it goes, following rules. The same JAM sounds different every time you play it, so it does not become a loop you get tired of — even after hours. Same engine as ARPJAM Studio. ■ Made for · Saunas, spas, treatment rooms · Cafes, shops, galleries · Working, studying, winding down · Exhibitions and installations — — ARPJAM Player does not create JAMs. To make them, use ARPJAM Studio.

Screenshots

Billie Tracker4 screens
ARPJAM Player3 screens

Verdict

The call

The clearest difference is ratings volume: Billie Tracker at 5 against ARPJAM Player's 1. On price, rating, 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

On the App Store both sit at effectively the same score — 5.0 for Billie Tracker against 5.0 for ARPJAM Player. That said, the two scores are not equally well evidenced: Billie Tracker has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

Scorecard1 real difference · 9 level
Billie Tracker versus ARPJAM Player: the parameters behind the verdict, then further details
ParameterBillie TrackerARPJAM Player
PriceFreeFree
Rating5.0 (5 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings5 — better1
Update frequencyEvery 2 daysEvery 2 days
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size56 MB78 MB
Age rating4+4+
DeveloperBillie CooperativeTakashi Tsunoda

Customer experience

Billie Tracker

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

ARPJAM Player

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Billie Tracker

No in-app purchases

None

ARPJAM Player

No in-app purchases

Questions

Is Billie Tracker free?
Billie Tracker is free to download, with no in-app purchases.
Is ARPJAM Player free?
ARPJAM Player is free to download, with no in-app purchases.
Which has better reviews, Billie Tracker or ARPJAM Player?
Billie Tracker and ARPJAM Player are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.
Do Billie Tracker or ARPJAM Player have ads?
Neither Billie Tracker nor ARPJAM Player shows ads.
Which is updated more often, Billie Tracker or ARPJAM Player?
Billie Tracker ships an update every 2 days, and ARPJAM Player every 2 days. Most recently, Billie Tracker was updated on October 1, 2026 and ARPJAM Player on October 10, 2026.

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