Beat 2 Hz
FreeDeep Sleep
A slow 2 Hz beat over brown noise for the last minutes before sleep.
- Carrier 432 Hz
- Layered with brown noise
Binaural beats
Binaural beats for focus and sleep: 27 presets, delta to gamma
From a 0.5 Hz bedtime beat to 40 Hz gamma, with an isochronic mode that works without headphones.
Binaural beats play a slightly different tone in each ear, and your brain hears the difference as a slow beat. Solbox has 27 binaural presets across delta, theta, alpha, beta and gamma, each layered over a matching noise. Without headphones, Solbox switches to isochronic tones, which pulse a single tone and work through speakers.
Free on iPhone · iOS 17.6 or later
All 27 presets, by brainwave band
Each card shows the beat frequency, the carrier tone and the noise underneath.
Binaural needs headphones. Without them, Solbox switches to isochronic tones automatically. Preset names are the labels used in the app, not claims about effects.
Delta 0.5–4 Hz
The slowest range, linked with deep sleep in EEG research. Delta presets are meant for bedtime and long rest.
Beat 1 Hz
ProBody Reset
The slowest-feeling bedtime preset, for lying still after a long, physical day.
- Carrier 528 Hz
- Layered with brown noise
Beat 3.5 Hz
ProLucid Dreaming
A delta beat at the top of the range, paired with pink noise, for people who like to experiment with dreams.
- Carrier 639 Hz
- Layered with pink noise
Beat 0.5 Hz
ProSoothe & Settle
A very slow 0.5 Hz beat on a low carrier, made to feel heavy and still.
- Carrier 174 Hz
- Layered with brown noise
Beat 2.5 Hz
ProRestore & Recharge
A calm delta preset for naps and rest days.
- Carrier 528 Hz
- Layered with brown noise
Theta 4–8 Hz
Linked with drowsiness, daydreaming and meditation. Theta presets suit wind-down, creative drifting and sitting practice.
Beat 6 Hz
ProDeep Meditation
A 6 Hz theta beat for sitting practice, visualization and long, quiet sessions.
- Carrier 432 Hz
- Layered with pink noise
Beat 5.5 Hz
ProCreative Flow
A drifting theta beat for brainstorming, sketching and free writing.
- Carrier 741 Hz
- Layered with pink noise
Beat 4.5 Hz
ProMemory Encoding
A slow theta preset layered with Theta Sync, for calm review sessions and flashcards.
- Carrier 528 Hz
- Layered with binaural focus tone
Beat 7 Hz
ProAnxiety Relief
A 7 Hz theta beat over pink noise for slowing down when your thoughts are racing. A listening option, not a treatment.
- Carrier 396 Hz
- Layered with pink noise
Beat 4 Hz
ProHypnagogic State
A 4 Hz beat for the drifting, half-awake space between waking and sleep.
- Carrier 432 Hz
- Layered with brown noise
Alpha 8–13 Hz
Linked with relaxed but awake states, like eyes closed and calm. Alpha presets suit reading, breaks and calm focus.
Beat 10 Hz
FreeCalm Relaxation
A classic 10 Hz alpha beat over green noise for breaks and unwinding.
- Carrier 432 Hz
- Layered with green noise
Beat 12 Hz
ProLight Focus
A 12 Hz alpha beat for relaxed, easy work like email and reading.
- Carrier 852 Hz
- Layered with bright focus texture
Beat 8.5 Hz
ProStress Relief
An alpha preset over pink noise for a calmer pace after a hectic hour.
- Carrier 396 Hz
- Layered with pink noise
Beat 9 Hz
ProVisualization
A 9 Hz beat paired with Crystal Wash for imagining, planning and goal setting.
- Carrier 639 Hz
- Layered with high shimmer texture
Beat 11 Hz
ProMindfulness
An 11 Hz alpha beat for mindful breathing and short check-ins.
- Carrier 528 Hz
- Layered with green noise
Beta 13–30 Hz
Linked with active, alert thinking. Beta presets suit study, problem solving and getting through a to-do list.
Beat 18 Hz
FreeDeep Focus
An 18 Hz beta beat over white noise. The go-to preset for study and deep work.
- Carrier 741 Hz
- Layered with white noise
Beat 20 Hz
ProEnergy Boost
A 20 Hz beta beat over violet noise for the afternoon slump.
- Carrier 417 Hz
- Layered with violet noise
Beat 15 Hz
ProProblem Solving
A 15 Hz beat for analytical work like coding, maths and spreadsheets.
- Carrier 852 Hz
- Layered with white noise
Beat 25 Hz
ProMotivation
A fast 25 Hz beta beat over Iron Wind for getting started on something you've been avoiding.
- Carrier 417 Hz
- Layered with flowing low-mid texture
Beat 14 Hz
ProPeak Alertness
A 14 Hz beta beat for staying sharp in long meetings or exam prep.
- Carrier 741 Hz
- Layered with white noise
Gamma 30–100 Hz
The fastest range. 40 Hz gamma has had a lot of research interest lately; Gamma presets suit short, intense work blocks.
Beat 40 Hz
ProPeak Cognition
A 40 Hz gamma beat over blue noise for short, intense work blocks.
- Carrier 852 Hz
- Layered with blue noise
Beat 32 Hz
ProAccelerated Learning
A 32 Hz gamma beat over pink noise for study sprints.
- Carrier 528 Hz
- Layered with pink noise
Beat 50 Hz
ProEnhanced Perception
A 50 Hz gamma beat over grey noise for detail work like editing and design.
- Carrier 741 Hz
- Layered with grey noise
Beat 100 Hz
ProTranscendence
The fastest preset at 100 Hz, paired with Velvet Noise, for experienced listeners.
- Carrier 852 Hz
- Layered with velvet noise
Special
Named presets that don't belong to one band, including the Schumann Resonance at 7.83 Hz.
Beat 7.83 Hz
ProSchumann Resonance
A 7.83 Hz beat named after the resonance of the Earth's atmosphere, layered with Earth Hum.
- Carrier 432 Hz
- Layered with deep ground noise
Beat 6 Hz
ProLove Frequency
A 6 Hz beat on a 528 Hz carrier over pink noise, for slow, warm evenings.
- Carrier 528 Hz
- Layered with pink noise
Beat 10 Hz
ProGrounding
A 10 Hz beat on a 432 Hz carrier over brown noise, for settling down after a busy day.
- Carrier 432 Hz
- Layered with brown noise
How do binaural beats work?
When your left ear hears a 432 Hz tone and your right ear hears 434 Hz, your brain perceives a third, slow “beat” at the difference: 2 Hz. That perceived beat is the binaural beat. Because it depends on each ear hearing a separate tone, binaural beats only work with headphones.
The theory behind them is called brainwave entrainment: the idea that the brain’s rhythms may drift toward a steady external rhythm. Studies on whether this changes attention, mood or sleep have produced mixed results so far.
What are the brainwave bands?
EEG research groups brain activity into bands by frequency. Solbox presets follow the same names:
- Delta (0.5–4 Hz): associated with deep sleep. Used for bedtime presets.
- Theta (4–8 Hz): associated with drowsiness and meditation. Used for wind-down and creative drifting.
- Alpha (8–13 Hz): associated with relaxed wakefulness. Used for calm focus and breaks.
- Beta (13–30 Hz): associated with active thinking. Used for study and work.
- Gamma (30 Hz and up): the fastest band. 40 Hz has attracted a lot of research interest.
No headphones? Isochronic mode
Isochronic tones pulse a single tone on and off, so they work on speakers. Solbox switches to isochronic mode (Pro) automatically when no headphones are connected. The full comparison is in binaural beats vs isochronic tones.
How to use binaural beats in Solbox
- Open the pull-up panel and choose Science-Based Brainwaves.
- Pick a preset, and choose Low, Normal or High intensity.
- Put on headphones for binaural mode, or use isochronic mode on speakers.
- Optionally start a Pomodoro or a sleep timer.
Deep Sleep, Calm Relaxation and Deep Focus are free. The other presets come with Solbox Pro.
A note on expectations
Binaural beats are a listening option, not a treatment. Some people find a steady beat helps them settle into work or sleep; others notice nothing. Keep the volume low, don’t use them while driving, and if you have epilepsy, check with your doctor first.
Binaural beats: common questions
What is the difference between binaural beats and isochronic tones?
Binaural beats play two slightly different tones, one in each ear, so they need headphones. Isochronic tones switch a single tone on and off at a steady rate, so they work through any speaker.
Which binaural beat frequency is best for focus?
People usually reach for beta presets between 13 and 30 Hz for study and work, such as Deep Focus at 18 Hz, and gamma at 40 Hz for short, intense blocks. Research results are mixed, so treat the presets as starting points and notice what works for you.
Are binaural beats safe?
For most people, listening at a comfortable volume is fine. Don't use them while driving, keep the volume low, and if you have epilepsy or a seizure disorder, ask your doctor before using rhythmic audio.
Can binaural beats help with ADHD?
Some small studies have looked at binaural beats and attention, with mixed results, and they are not a treatment for ADHD. Many people simply like having a steady beat under their work.