SpotRadar vs Billie Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SpotRadar
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SpotRadar helps you discover live music, events, and local radio-style broadcasts happening around you. Open the app to explore a live map of nearby music activity, see what’s happening in your area, and follow the sounds, people, and places that match your taste. With Spot Radar, you can: Discover nearby live music events on an interactive map Explore local stations and creator broadcasts See what’s playing now and what’s coming up next Follow listeners, stations, and venues you like Preview music and event details before heading out Use location-based discovery to find music happening around you Browse publicly or create an account for a more personalised experience Whether you're looking for a last-minute gig, a new local venue, or the sound of your city in real time, Spot Radar helps you connect with music as it happens. Why people use Spot Radar Spot Radar is built for music fans who want discovery to feel live, local, and social. Instead of scrolling endlessly, you can open the map, see what’s nearby, and start exploring. Account & privacy You can browse parts of the experience publicly, and create an account to unlock personalised features. Location is used to power nearby discovery and improve the relevance of music, stations, and event information shown in the app.
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.
- 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
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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.
Screenshots
Verdict
The clearest difference is price: Billie Tracker at Free against SpotRadar's $9.99. Billie Tracker also leads on iOS requirement (15.1 vs 18.6). On ads, in-app purchases and device support 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
Billie Tracker is free to download; SpotRadar costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | SpotRadar | Billie Tracker |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | — | Every 2 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 20 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Richardson | Billie Cooperative |
In-app purchases
SpotRadar
No in-app purchases
Billie Tracker
No in-app purchases









