Diapasound

Binaural Drone & Tone Studio

$4.99 · Designed for iPad. Not verified for macOS.

Relax, sleep, meditate and focus with immersive sound journeys. Combine binaural beats, drones, rhythms and ambience — then create, import and share sound packs. Diapasound is a precision binaural beat and drone instrument for iPhone and iPad. Every parameter is yours to control — saved to a named preset and ready the moment you need it. No subscription. No account. No internet required. BINAURAL BEATS Set your base frequency from 25 to 1000 Hz with two decimal precision. Dial in a beat frequency from 0.1 to 60 Hz — delta, theta, alpha, beta and gamma ranges. Fine-tune to the exact pitch you want using the precision fine-tune control. The binaural beat forms naturally between the two ears; use headphones for the full effect. MUSICAL FREQUENCY SELECTION A built-in piano keyboard lets you select your base frequency by note. Switch between standard A=440 and A=432 tuning, or tap into the ancient Solfeggio scale — including the 528 Hz SOL frequency, widely known as the Love frequency. DRONE LAYER Choose from a set of root notes or load your own audio file as a sustained drone. The loop plays continuously, blending under the binaural bed. AMBIENT LAYER Built-in ambient synthesis includes rain. Load your own ambient recording for a fully custom environment. ISOCHRONIC TONES Add a rhythmic pulse layer — sine, square, sawtooth, triangle or click — at any beat frequency multiple, or set an independent frequency for complete control. The click mode produces a sharp noise burst matching the MIT pulse train protocol. Isochronic tones work without headphones. PRESET LIBRARY Save unlimited named presets to your personal library. Export collections as a single shareable file — including any custom audio samples — so everything travels together in one bundle. Import packs the same way: one file, entire collection with audio restored instantly. PRESET CYCLING Auto-cycle through saved slots with smooth crossfades and adjustable interval timing. Ideal for long sessions that evolve over time. DESIGNED FOR REAL USE — Audio continues when the screen locks — Works completely offline — Pay once, own forever — no subscription — Universal: iPhone and iPad — No account required

Ratings & Reviews

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Build 15 fixes ambient layer recall when switching presets — the correct audio source now plays on first tap and the UI label correctly shows whether built-in rain or a custom file is active. Also includes updated app icon.

Version 1.2

The developer, francois blaignan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • francois blaignan
    Size
    • 2.3 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Tinitus Inc
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.