Binaural & tones
528 Hz: What It Is, Why People Listen, and What the Evidence Says
528 Hz is everywhere, from meditation playlists to sleep videos, usually with very big promises attached. Here is the calm, honest version.
Guides to focus sounds and noise
Honest, practical guides to noise colors, body doubling, Pomodoro and brainwave sounds, with sources.
App guides
8D Audio vs 3D Audio: What Spatial Sound Is and How to Use It for Focus
Flat background sound fades away fast. Sound that slowly moves around your head is harder to tune out, in a good way. Here is how it works.
Binaural & tones
Binaural Beats vs Isochronic Tones: Differences, Headphones and Which to Try
Two ways to put a steady rhythm under your work. Here is how they differ, what the research shows, and how to decide.
App guides
Bored of White Noise? Create Your Own Focus Sounds With AI
Novelty matters for ADHD brains. If your usual noise has gone stale, type the sound you imagine and let AI make it.
Sleep
Brown Noise for Sleep: How to Use a Sleep Timer That Fades Out
Brown noise helps a lot of people drift off. The trouble starts at 3 a.m., when it stops. Here is how to set it up so it helps all night, or fades out gently.
Focus & ADHD
Brown, Pink or Green Noise for ADHD Focus: What the Research Says
Brown noise went viral in ADHD communities. Here is what the studies actually show, and a simple way to find the noise that works for you.
Binaural & tones
Delta to Gamma: Which Binaural Beat Frequency for Sleep, Calm or Focus?
Racing mind at night, foggy mind in the afternoon? Here is what the brainwave bands mean, which beat people pick for each moment, and what the evidence really says.
Focus & ADHD
Feel the Sound: Can Haptic Vibrations Help You Focus and Settle?
If you fidget, tap or pace to think, sound alone may not be enough input. Here is the case for adding a gentle sense of touch.
Productivity
How to Block Out Noise While Working: Masking Chatter, Neighbors and Open Offices
Voices, drilling, a TV through the wall. You can't always remove the noise, but you can make it much harder for your brain to notice.
App guides
How to Play White Noise Over Spotify on iPhone (Without Pausing Your Music)
Want brown noise under your playlist, or rain under a podcast? Here is why iPhone apps usually pause each other, and how to make them play together.
Focus & ADHD
Pomodoro for ADHD: 25/5 vs 50/10 vs 90/20 (and When to Go Custom)
The classic 25-minute block isn't sacred. Here is how to pick, and adjust, Pomodoro intervals for a brain that starts slow and then won't stop.
Binaural & tones
Solfeggio Frequencies Explained: What Each Tone From 396 to 852 Hz Is Said to Mean
Stress builds up, and a steady tone can help some people slow down. Here is what the solfeggio tones are, the moods they're associated with, and an honest look at the claims.
Focus & ADHD
What Is Body Doubling? How It Helps ADHD Brains Start Tasks (and Solo Options)
No one to work next to? Here is how ambient sound can bring back some of the feeling of company, and which sounds to try first.
Noise colors
White vs Pink vs Brown Noise: Which Is Best for Sleep, Study or Focus?
The three noises people argue about most, compared side by side, plus the less common colors and a simple way to choose.
Focus & ADHD
Why Can't I Focus in Silence? Quiet Rooms, ADHD and What to Play Instead
For many ADHD brains, silence isn't calm. It's an open invitation for every stray thought. Here is why, and what tends to work better.
About these guides
Solbox is a focus sounds app made first for ADHD brains, and this blog covers the habits around it: which noise color to try, how to body double when you work alone, and how to pick Pomodoro intervals you can actually keep.
Guides are written by the Solbox team. We link to the research where it exists, say so when it is thin, and never claim a sound can treat anything.