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TestFlight & installation

How do I install the beta?
Open the invitation link on your iPhone in Safari, install Apple’s free TestFlight app from the App Store if you don’t already have it, then tap “Accept” followed by “Install”. Updates arrive automatically through TestFlight.

The link doesn’t work on my Mac or Android device.
TestFlight is iOS/iPadOS only. Open the invitation on your iPhone, or scan the QR code on the home page with the iPhone camera.

The build expired or stopped opening.
Each TestFlight build is valid for up to 90 days. Open TestFlight and tap “Update”, or reinstall the latest build. If that doesn’t work, email and we’ll re-send the invite.

Importing music

What file formats are supported?
MP3, M4A (AAC) and WAV. DRM-protected files (such as tracks from streaming services) cannot be imported — Run2Beat works with music you own as files.

How do I get files into Run2Beat?
There are exactly two paths:

• The in-app Import view. Pick one or more audio files (MP3, M4A or WAV) or pick a folder — Run2Beat scans subfolders too and can optionally create one playlist per folder. iCloud Drive files are downloaded automatically before the import starts. Files are copied into Run2Beat’s private sandbox; the originals stay where they are.
• AirDrop of a Run2Beat playlist from another user. A friend who also runs Run2Beat can “Send via AirDrop” from a playlist on their iPhone. You receive a .r2bplaylist package containing the audio files, BPM values, artwork and play order, and the app imports it as a fresh playlist.

There’s no other way in. Run2Beat is a local-files app and does not pull from streaming services or generic share-sheet sources.

Some tracks show up without a title or artwork.
Run2Beat reads the metadata embedded in the file. If the file has no tags, you can use the built-in Shazam tagging to identify the track and fill in the details.

BPM analysis

How is BPM measured?
Locally on your iPhone. Run2Beat analyses the audio waveform itself — no internet lookup, no servers. The first analysis of a large library may take a few minutes; after that, results are cached.

One of my tracks got the wrong BPM.
It happens, especially with half-time or double-time tracks. Open the track, tap “Re-analyse”, or enter the correct BPM manually. Your override is remembered.

Apple Watch sync

How do I get music onto my Apple Watch?
Open the Sync screen on iPhone, review the pending changes and start the sync. Keep iPhone and Watch close together — files are sent over Bluetooth. Both devices need to be active at the moment you start; after that, both screens can be off. The Watch screen does not need to be on for the transfer to continue, and you do not need to put the Watch on its charger — that’s an Apple Music-only requirement that doesn’t apply to Run2Beat. A normal-length playlist routinely takes several minutes the first time; subsequent syncs are much faster because only changes are re-transferred.

The Watch shows nothing during sync — is that normal?
Yes. The Watch screen stays unchanged while a transfer is in flight; the progress overlay lives on the iPhone, not on the Watch. As long as the iPhone shows the sync overlay (or you can see pending items on the Sync screen) the transfer is running. After a successful sync, each list gets a green “On Watch” indicator confirming the Watch has the latest version. If iOS suspends the transfer (out-of-range, drained battery) the next sync simply picks up where it left off — nothing has to be re-sent manually.

See the Apple Watch sync deep dive for the full picture.

Sound & playback

Volume normalisation, EQ and crossfade
These are all controlled from Settings inside the app and applied during playback — they never modify your audio files. Volume normalisation measures every track’s loudness in LUFS (ITU-R BS.1770 / EBU R 128, the same standard Apple Music and Spotify use) and gently raises or lowers it to a reference level you pick (−14 LUFS by default), with built-in clipping protection. The equalizer has ten sliders spanning 32 Hz to 16 kHz at ±12 dB; save a preset per pair of headphones and switch between them in a tap. Saved presets sync to Apple Watch automatically.

See the deep dives for volume normalisation and BPM analysis for more.

Playback through AirPods, car or speakers
Run2Beat plays through any output iOS routes audio to. If a Bluetooth device sounds wrong, try forgetting and re-pairing it in iOS Settings.

Privacy & data

Run2Beat keeps everything — music files, BPM data, playlists, settings — on your device. We don’t run analytics or tracking. See the full Privacy Policy for details.

Feature requests & bug reports

Send them to hello@run2beat.com. For bugs, please describe what you did, what happened, and what you expected to happen. TestFlight also has a built-in “Send Beta Feedback” button that includes a screenshot and diagnostic info automatically.