{"slug": "show-hn-bpm-companion-app-that-matches-playlist-to-your-cadence-beta", "title": "Show HN: BPM Companion – app that matches playlist to your cadence (beta)", "summary": "BPM Companion, a new app that creates cadence-matched playlists from a user's own music for running, cycling, or steady-tempo workouts, is launching a beta for Android with iOS to follow. The app analyzes music on-device using a neural beat tracker and ensures nothing is uploaded, offering beat-matched transitions between songs. The same Rust core powers both platforms, and the tempo engine is available as an SDK for fitness app developers.", "body_md": "Cadence-matched playlists from your own music — for running, cycling, or any steady-tempo workout. Analyzed on your device; nothing is uploaded, ever.\n\nWant to try it early? We're looking for beta testers — Android first, iOS soon.\n\nUse the email of the Google account you sign in with on your Android phone — that's how we add you to the beta.\n\nor write to [waitlist@bpmcompanion.app](mailto:waitlist@bpmcompanion.app)\n\nPoint it at your music. Tempo is detected on your device by a neural beat tracker — nothing is uploaded, ever.\n\nTell it your cadence — say, 175 steps or 90 pedal strokes per minute.\n\nGet an ordered playlist that locks to your cadence, with beat-matched transitions between songs.\n\nWorks with the files you already own.\n\nA 90 BPM groove fits a 180 SPM run. BPM Companion knows, and labels it.\n\nAll analysis happens on your device. No account, no upload.\n\nSongs hand off on the downbeat, like a DJ.\n\nThe same Rust core on both platforms — identical results.\n\nBuilding a fitness app? The tempo engine is available as an SDK.", "url": "https://wpnews.pro/news/show-hn-bpm-companion-app-that-matches-playlist-to-your-cadence-beta", "canonical_source": "https://bpmcompanion.app/", "published_at": "2026-07-30 08:37:59+00:00", "updated_at": "2026-07-30 08:52:22.615657+00:00", "lang": "en", "topics": ["artificial-intelligence", "machine-learning", "ai-products", "ai-tools", "developer-tools"], "entities": ["BPM Companion", "Android", "iOS", "Rust"], "alternates": {"html": "https://wpnews.pro/news/show-hn-bpm-companion-app-that-matches-playlist-to-your-cadence-beta", "markdown": "https://wpnews.pro/news/show-hn-bpm-companion-app-that-matches-playlist-to-your-cadence-beta.md", "text": "https://wpnews.pro/news/show-hn-bpm-companion-app-that-matches-playlist-to-your-cadence-beta.txt", "jsonld": "https://wpnews.pro/news/show-hn-bpm-companion-app-that-matches-playlist-to-your-cadence-beta.jsonld"}}