Thank you for using BrainTune. This page answers common questions and explains how to get help.
BrainTune plays binaural beats—slightly different tones to each ear—to support focus, relaxation, meditation, or sleep preparation. Pick a scene preset or use the custom tuner; set a sleep timer on the player screen and review sessions under Insights. No account is required for core features.
Headphones are required. Speakers cannot deliver separate L/R frequencies. Not a medical device.
Binaural beats work when each ear hears a different frequency. Phone speakers usually cannot keep those frequencies separated reliably.
Check the cable or Bluetooth connection, system volume, and the in-app volume limit in Settings. Single-ear buds may not provide a proper binaural effect.
Allow background audio and, on iOS, notification permission when prompted so lock-screen media controls work. Review the app’s permissions in system Settings.
Open Custom from the home screen. Adjust left/right carrier frequencies (Hz) and the beat offset; tap δ, θ, α, β, or γ chips for quick band presets. Saved presets appear in your list (limits may apply per version).
On the player screen, open the sleep timer and choose a duration (e.g. 15–90 minutes). Playback fades out when time is up. Default minutes can be changed in Settings.
Sessions are recorded on device when you start and end playback. The current version does not upload them to our servers. Uninstalling removes local records.
External academic sites need a network connection. Try again on Wi‑Fi or check whether the app is allowed to use the network.
Headphones (over-ear or in-ear) are strongly recommended. Bluetooth speakers are not suitable for binaural beats.
Do not use if you have epilepsy, are pregnant, or take psychoactive medication. Do not use while driving or operating machinery. Stop if you feel unwell and seek professional advice.
Try:
See our Privacy Policy (English) or 隐私政策（简体中文）. The URL in App Store Connect must point to your hosted HTTPS copy.
For questions, suggestions, or bug reports:
Please include app version, device model, iOS version, and reproduction steps; attach screenshots or a screen recording if possible.
We aim to reply within 3–5 business days. Holidays or high volume may delay responses.
Thank you for using BrainTune!