Calma Blog
Find the right sound guide for your goal
Explore practical, evidence-aware paths about sleep sounds, noise colors, focus, relaxation and tinnitus. Each path begins with a broad guide and then moves into more specific questions.
Sleep better
Sleep sounds and bedtime routines
Start with the comparison guide, then explore masking, bedtime habits and safer use for children.
Best Sounds for Sleep
A practical guide to rain, white noise and softer sleep soundscapes.
Read guideWhite Noise for Sleep
When white noise can help and how to build a calmer bedtime environment.
Read guideHow to Build a Bedtime Routine
Simple ways to create a calmer evening rhythm that supports sleep.
Read guideWhite Noise for Babies: A Safer-Use Guide
Practical precautions for using steady background sound around babies and young children.
Read guideUnderstand the sound
White, pink, brown and green noise
Learn what the colors mean acoustically, where evidence exists and how apps compare with other playback options.
Rain Sounds vs White Noise
Compare emotional comfort, masking and bedtime atmosphere.
Read guideBrown Noise vs White Noise vs Pink Noise
Explore differences between noise colors and find which one is best for your focus or sleep.
Read guideGreen Noise for Sleep: Meaning and Limits
Learn what marketers call green noise, how it differs from standard noise colors and what evidence is missing.
Read guideHow to Choose a Free White Noise App
Compare apps, machines and streaming with a checklist for offline audio, loops, timers and pricing.
Read guideWork and study
Focus sounds and ADHD
Compare background sound for study with the more limited clinical evidence concerning ADHD and binaural beats.
Best Sounds for Studying
Find the kinds of sounds that may help concentration and deeper focus.
Read guideWhat Color Noise is Best for ADHD?
Explore why brown noise is often preferred over white noise for ADHD, focus, and overstimulation.
Read guideBinaural Beats: Evidence and Limits
Understand how binaural beats are produced and why research findings remain mixed.
Read guideWind down
Nature sound and relaxation
Explore rain, water and forest sound without turning early research into promises that every listener will relax.
Nature Sounds for Deep Relaxation
Explore how natural soundscapes like rain and ocean waves can act as natural white noise to enhance your bedtime routine.
Read guideRain Sounds for Sleep and Focus
Separate masking, personal comfort and early research from claims that rain treats insomnia or ADHD.
Read guideGuided Breathing Techniques
Explore calming breathing methods for relaxation, balance, sleep and focus.
Read guideListen cautiously
Tinnitus and sound enrichment
Begin with the safety-focused guide, then compare masking sounds and their frequency profiles.
Sound Enrichment for Tinnitus
Learn how background sound may make tinnitus less noticeable and where the evidence remains limited.
Read guideWhite Noise for Sleep
When white noise can help and how to build a calmer bedtime environment.
Read guideBrown Noise vs White Noise vs Pink Noise
Explore differences between noise colors and find which one is best for your focus or sleep.
Read guide