Brainwave entrainment, tuned to you.
Entrain plays precision binaural beats and isochronic tones that gently guide your brain toward deep sleep, sharp focus, or calm. Pick a goal — the app tunes the rest. Try it free in your browser, no account needed.
Free in browser · iPhone · iPad · Mac · Apple Watch · Android coming soon →
One brain, two delivery paths
Both methods nudge your brain's electrical rhythm toward a target frequency. Pick the one that fits your moment.
Binaural beats
Two pure tones — one per ear — create a phantom beat your brain builds at the difference frequency. Stereo headphones required.
Read the science →
Isochronic tones
A single tone pulsed at the target frequency, with optional ambient layers. Works on any speaker — Bluetooth, AirPlay, or built-in.
Read the science →
Hear it now, right in your browser
Generate live binaural beats and isochronic tones for free — no download, no sign-up. Pick a preset, press play, and feel the difference. Sessions run up to 30 minutes.
Five bands, five states of mind
Your brain runs at different speeds for different states. Entrain targets each one — from the slow delta of deep sleep to the fast gamma of peak focus.
How brainwave frequencies map to mental states → · browse by goal →
Built for the whole night, and the whole day
20 tuned presets
Sleep, Relax, Focus, and Energy presets from 0.25 Hz to 40 Hz — or dial in any frequency by hand.
Ambient sound layers
Mix brown noise, pink noise, rain, or ocean under isochronic tones for an all-night soundscape.
Every device
Free in any browser, plus native apps for iPhone, iPad, Apple Watch, and Mac. Android is coming soon.
Background & lock screen
In the app, audio keeps playing when the screen locks, with full Now Playing and Control Center support.
Sleep timer
Fade out after 15 minutes to 8 hours, with a gentle fade-in so nothing jolts you awake.
Fully offline & private
All audio is generated on-device in real time. No streaming, no buffering, no tracking your sessions.
From open to entrained in three taps
Pick a goal
Sleep, relax, focus, or energy. Entrain tunes your first session to match — change it any time.
Choose your sound
Headphones in for binaural beats, or any speaker for isochronic tones. Layer in ambience if you like.
Press play, drift off
A soft fade-in eases you in. Set a timer and let your brain settle into the rhythm.
One subscription. Every device.
Try everything free for 7 days. Then keep going for less than a coffee a month. Cancel anytime — or use the free web player, no account needed.
- Binaural beats + isochronic tones
- All 20 presets & ambient layers
- iPhone, iPad, Apple Watch & Mac
- Everything in Monthly
- Save 25% versus paying monthly
- One price, all your devices
Pricing shown in USD; local prices vary. Payment is charged to your Apple ID at confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the period ends. Manage or cancel in your App Store settings.
Purpose-built for entrainment — not a playlist
Most wellness apps stream pre-recorded tracks. Entrain generates the exact frequencies live, on your device, for both headphones and speakers. See how it stacks up against specific apps →
| Capability | Entrain | Typical focus-music app | Typical meditation app |
|---|---|---|---|
| True binaural beats | ✓ | — | — |
| Isochronic tones (no headphones) | ✓ | — | — |
| Frequencies generated live on-device | ✓ | Streamed | Streamed |
| Free in-browser web player | ✓ | Varies | Varies |
| Exact, adjustable target frequency | ✓ | — | — |
| Ambient layers (brown/pink/rain/ocean) | ✓ | ✓ | ✓ |
| Apple Watch app | ✓ | Varies | Varies |
| Native Mac app | ✓ | Varies | — |
| Works fully offline | ✓ | Partial | Partial |
| All-night sleep timer (up to 8 hr) | ✓ | Varies | ✓ |
Comparison reflects common feature sets in the focus-music and meditation categories and is for general guidance. Always check each app's current features and pricing.
Frequently asked
Do binaural beats actually work?
Research on brainwave entrainment is genuinely promising but still emerging, and results vary from person to person. Many people find binaural beats and isochronic tones a reliable, drug-free aid for winding down, focusing, or meditating. Entrain gives you precise control so you can find what works for you. Read our evidence-aware overview →
Do I need headphones?
For binaural beats, yes — the effect depends on a slightly different tone reaching each ear, so stereo headphones are required. For isochronic tones, no — a single tone is pulsed on and off, so it works on any speaker, including Bluetooth and AirPlay.
Is there a free version of Entrain?
Yes. The free web player runs in any browser with no account — both binaural beats and isochronic tones, with core brainwave presets and sessions up to 30 minutes. The native apps add 20 presets, ambient mixing, sleep timers, background playback, Apple Watch, and offline use.
Which devices is Entrain on?
Entrain runs as native apps for iPhone, iPad, Apple Watch, and Mac, plus a free web player in any browser. One subscription covers all the apps. Android is coming soon — join the waitlist.
How much does it cost?
The web player is free. Entrain Pro starts with a 7-day free trial, then $4.99/month or $44.99/year (about $3.75/month) — roughly half what most binaural-beats apps charge. You can cancel anytime from your App Store settings.
Can I use it while I sleep?
Yes. In the app, audio keeps playing when your screen locks, and the sleep timer fades the sound out after anywhere from 15 minutes to 8 hours. Isochronic tones with a brown-noise layer are popular for all-night use on a bedside speaker.
Is it safe?
Entrain is a wellness and relaxation tool, not a medical device, and isn't intended to diagnose or treat any condition. If you have epilepsy or a seizure disorder, are pregnant, wear a pacemaker, or have a medical concern, talk to your doctor first. Never listen while driving or operating machinery.
Tune your brain tonight.
Start free in your browser, or get the app for a 7-day trial and feel the difference precision frequencies make.