40 Hz · Gamma
Focus
Attention, held lightly. A steady pulse for work that needs to stay with you.
220 Hz · 260 Hz
Binaural beats app for Android
A different tone in each ear
Binaural Beats: Aura is a free binaural beats app by Syntergy Labs. Two close pure tones — one on the left, one on the right — create the beat when you listen with headphones. Four ready sessions cover focus, sleep, meditation, and recovery, or a studio where you shape the carrier and the difference yourself.
Coming to Google Play
Hear the sessions
4
Ready sessions
30 min
Free session length
24 h
With lifetime Premium
Meditation
Theta · 7 Hz
Guide
What this binaural beats app plays
The number people ask for is the difference between the ears, not a single tone in the room.
Binaural Beats: Aura (Android package cloud.syntergy.binauralbeatsaura) plays
a pure tone in each ear. Focus is 40 Hz gamma, sleep is 2 Hz delta, meditation is 7 Hz
theta, and recovery is 10 Hz alpha. Headphones are required. The app is free, with an
optional one-time Lifetime Premium and no subscription. It is coming to Google Play.
A binaural beat is that difference. Left ear at 432 Hz and right ear at 439 Hz means a 7 Hz beat. On a speaker the tones mix in the air, so the beat does not form the same way. Aura is built around keeping them apart.
| Session | Band | Beat | Left ear | Right ear | Used for |
|---|---|---|---|---|---|
| Focus | Gamma | 40 Hz | 220 Hz | 260 Hz | Sustained attention while working |
| Sleep | Delta | 2 Hz | 174 Hz | 176 Hz | Rest, with a slow pulse |
| Meditation | Theta | 7 Hz | 432 Hz | 439 Hz | Quiet sitting |
| Body Repair | Alpha | 10 Hz | 136 Hz | 146 Hz | A calm pause after effort |
| Custom | 0.5–40 Hz | Your choice | 100–800 Hz | Carrier + beat | Lifetime Premium studio |
These are the tones the app generates. Aura does not diagnose, treat, or replace medical care.
Sessions
One beat, chosen for the hour
Each preset sends a carrier to one ear and a slightly different tone to the other. The number on the card is the difference — the pulse you hear between them.
2 Hz · Delta
Sleep
Down into rest. A slow pulse so the day can loosen and the body can drop.
174 Hz · 176 Hz
7 Hz · Theta
Meditation
Still, and awake. A quiet difference for sitting without filling the room.
432 Hz · 439 Hz
10 Hz · Alpha
Body Repair
Recover in quiet. An alpha pulse for a calm, alert pause after effort.
136 Hz · 146 Hz
0.5–40 Hz · Premium
Custom
Shape the carrier and the binaural difference yourself. The carrier runs from 100 to 800 Hz. The beat steps by half a hertz, up to 40 Hz.
The left ear plays the carrier. The right ear plays that tone plus the beat.
Aura is a listening app. It does not diagnose, treat, or replace medical care.
How you listen
Headphones, then the rest can wait
The beat only forms when each ear hears its own frequency. Aura is built around that.
01
A tone in each ear
Wired, Bluetooth, USB, or a hearing aid — the app reads the current audio output and shows the device name your phone already reports. If headphones come unplugged, the session pauses.
02
Check the channels
Tap left or right and the test tone should stay in that ear. You can also choose to keep listening on the speaker, knowing the two tones will mix.
03
Leave it running
Playback continues with the screen off. A media notification lets you pause or stop, and a mindfulness streak on the phone counts the days you show up.
FAQ
Questions about binaural beats
Straight answers for the things people ask before they put headphones on.
What is Binaural Beats: Aura?
Binaural Beats: Aura is a free Android binaural beats app by Syntergy Labs, package
cloud.syntergy.binauralbeatsaura. It plays one pure tone in the left ear and a
slightly different pure tone in the right ear. The difference between those tones is the
binaural beat. Ready sessions cover focus, sleep, meditation, and recovery. It is coming
to Google Play.
What is a binaural beat?
A binaural beat is the pulse you hear when each ear receives a steady tone at a slightly different frequency. If the left ear hears 432 Hz and the right ear hears 439 Hz, the beat is 7 Hz. The beat forms in hearing, so the two tones have to stay apart: one ear, one frequency.
Which binaural beat frequencies does Aura use?
Focus is a 40 Hz gamma beat: 220 Hz left, 260 Hz right. Sleep is a 2 Hz delta beat: 174 Hz left, 176 Hz right. Meditation is a 7 Hz theta beat: 432 Hz left, 439 Hz right. Body Repair is a 10 Hz alpha beat: 136 Hz left, 146 Hz right. Lifetime Premium adds a custom pair: carrier from 100 Hz to 800 Hz, beat from 0.5 Hz to 40 Hz in steps of 0.5 Hz. The left ear plays the carrier. The right ear plays the carrier plus the beat.
Do binaural beats work without headphones?
No. A binaural beat needs a different frequency in each ear. On a speaker the two tones mix in the air. Aura reads the current audio output, shows the device name the phone reports, and pauses the session if headphones disconnect. A channel test plays a tone on the left or the right so you can confirm they stay apart. You can choose to keep listening on the speaker, knowing the tones will mix.
Is Binaural Beats: Aura free?
Yes. The app is free. A free session lasts 30 minutes and is unlocked by watching three short rewarded ads. All four presets are included. Lifetime Premium is one payment through Google Play, not a subscription. It removes ads, unlocks custom frequencies, and allows any length up to 24 hours, including while a session is already playing.
Can I choose my own binaural beat frequency?
Yes, with Lifetime Premium. The carrier runs from 100 Hz to 800 Hz. The beat runs from 0.5 Hz to 40 Hz and moves in steps of half a hertz. The left ear plays the carrier. The right ear plays that tone plus the beat.
How is a binaural beat different from white noise?
A binaural beat is two pure tones, one per ear, whose difference you perceive as a pulse. White noise is broadband sound with no pitch difference between the ears. Aura generates binaural beats. It does not play noise beds, music, or nature sound.
Is Aura a medical or therapy app?
No. Aura is a listening app. It does not diagnose, treat, or replace medical care. The frequencies above are the tones the app plays, not a prescription.
English and Spanish, light or dark
The app follows your phone’s language and appearance, and you can switch either one. Progress — the streak, session credits, and Premium — stays on the device. Binaural Beats: Aura is on its way to Google Play.
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