Introduction to Decimal: Unlock Your Brain’s Potential

Welcome to Decimal, your one-stop app for binaural beats designed to elevate your mental and emotional well-being. Ever wondered how you could focus better, sleep more soundly, or lift your mood? That’s where binaural beats and Decimal come into play.

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What Are Binaural Beats?

Binaural beats are auditory illusions that occur when two slightly different frequencies are played in each ear. Your brain perceives a third tone that’s the mathematical difference between the two. For example, if one ear hears 300Hz and the other hears 310Hz, your brain detects a 10Hz beat. This phenomenon taps into various states of consciousness.

Why Use Decimal?

Binaural beats are more than a cool auditory trick; they’ve been researched for their potential benefits on the mind and body. Decimal offers presets finely tuned for specific outcomes:

  • Need razor-sharp focus and alertness? Try it now.
  • Struggling to get quality deep sleep? Try it now.
  • Want to boost your mood effortlessly? Try it now.

Unleash your brain’s potential today with Decimal.

Benefits of Binaural Beats

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Cognitive Benefits


Sharpen your focus for tasks that require sustained attention.

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Learning Enhancement

Absorb new information more efficiently.

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Memory Retention

Improve your ability to store and recall information.

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Emotional Benefits

Mood Elevation

Turn around a bad day or enhance your good vibes.

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Unwind after a hectic day and ease your mind.

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Foster a mental environment where your creativity can flourish.

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Physical and Therapeutic Benefits

Deep Sleep

Get quality sleep by sinking into a deeper slumber.

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Deepen your meditative states for more effective sessions.

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Exercise Motivation

Get into the zone for your workouts.

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How to Use the App and Its Presets

Decimal is a Progressive Web App (PWA), which means you don’t need to download anything—it works on any device straight from your web browser. For an optimal experience, you can add it to your home screen.

Getting Started

  • No Download Needed: Just visit the homepage to start using the presets.
  • Add to Home Screen: For quick access, add the app to your home screen.
  • Free to Use: No charges, open for everyone.

Using Presets

  • Select a Preset: Use any of our scientifically-designed presets for specific benefits.
  • Custom Beats: Want something unique? Head to the custom beat generator.

Playback Features

  • Lock Screen Controls: Control playback without unlocking your device.
  • Timers: Stop playback after a preset or custom length of time. Ideal for sleep or timed focus sessions. Set the timer, then hit play.

Important Note

  • Requires Headphones: To experience the full benefit, use headphones.

About the Developer

My name’s Chris Garrett. I’m a full-stack developer and indie hacker. I enjoy building apps with interesting tech and beautiful design. I mainly work in the music industry for clients like Universal Music and artists like U2.

Why Decimal?

I’ve been using binaural beats since hearing about them on the Huberman Lab podcast. They’ve been helpful, but I wasn’t happy with the existing apps. So I tested if I could make my own with the Web Audio API. It worked, so I built Decimal.

Tech Stack

I built Decimal using tools I wanted to try: Astro, Million.js, Nanostores, and Satori.


I write about tech and other topics on my blog. If you’ve got an interesting project, I’m open to collaborations.

Frequently Asked Questions

What are Binaural Beats?

Binaural beats are auditory illusions that occur when two slightly different frequencies are played in each ear. They are thought to have various cognitive and therapeutic benefits.

How Do I Use Decimal?

Visit the Decimal homepage to use presets or go to custom beat generator to create your own. For optimal experience, add the app to your home screen.

Is it Free?

Yes, Decimal is free to use and accessible to everyone.

Do I Need to Download Anything?

No, Decimal is a PWA, meaning it works in your browser. But you can add it to your home screen for quick access.

How Do I Use the Timer?

Set your preferred time in the timer settings. Start the timer and then hit play on your chosen preset or custom beat.

Why Headphones?

For binaural beats to work effectively, different frequencies need to be played in each ear, which is best done through headphones.

What Tech is Behind Decimal?

The app is built with Astro, Million.js, Nanostore, and Satori for OG images.

How Can I Contact the Developer?

You can read my blog for more insights or reach out for collaboration on interesting projects.