What are binaural beats?

When each ear hears a slightly different tone — say 200 Hz on the left and 205 Hz on the right — your brain perceives a third, pulsing tone at the difference: a 5 Hz beat. Synra generates that pair of tones and places it under a soundscape, so the beat is felt rather than heard as a beep.

Do I need headphones?

Yes. The beat only exists when each ear gets its own tone, so headphones are needed for the binaural effect. Through speakers you will still hear the soundscape, but not the beat.

How long does it take to work?

Most people listen for at least 5 to 10 minutes before judging how it feels, then carry on for as long as it is useful. For sleep, set the timer and let Synra fade out on its own.

Is there any science behind it?

There is a growing body of peer-reviewed research on binaural beats for relaxation, sleep, attention and anxiety, with mixed but encouraging results. Experiences differ from person to person. Synra is a wellness app, not a medical device, and is not intended to diagnose, treat or cure any condition.

Can it help with tinnitus?

Synra has a Tinnitus Relief scenario with sounds that many people find helpful for masking and relief. It is not a treatment for tinnitus — if you have hearing concerns, speak to a doctor or audiologist.

Can I listen while using other apps?

Yes. Turn on Backdrop Mode and Synra will mix with your podcast, music or audiobook instead of pausing it.

Keep the volume at a comfortable, low level. Do not listen while driving or operating machinery, especially to sleep sessions. If you have epilepsy, a seizure disorder, a heart condition or are pregnant, check with a doctor first.

How does the free trial work?

Synra offers a free trial for new subscribers. If you do not cancel at least 24 hours before it ends, it turns into a paid subscription that renews automatically. You can cancel any time in iPhone Settings → your name → Subscriptions.

Sleep · Relax · Focus · Meditate · Tinnitus

Tune your mind
to the moment.

Binaural beats layered under calming soundscapes — to sleep deeper, relax, focus, meditate and soften the ringing of tinnitus.

Download on theApp Store

9:41

δ θ

Sleep

Slow beats under rain, snowfall and night air for falling asleep and staying down.

Relax

Release anxiety and stop overthinking with soft Alpha sessions for a busy head.

Focus

Steady, wordless beds for deep work, study and ADHD-friendly flow.

θ α

Meditate

Recharge and recentre with mindful, deep-meditation and solfeggio-tuned sessions.

noise

Tinnitus

Brown, pink, green and white noise plus rain and water to soften the ringing.

Discover sound therapy

Five goals. Tap one to hear it.

Each one is a real Synra soundscape with a binaural beat generated live in your browser.

Use headphones — the beat lives in the difference between your ears

● Tinnitus relief

When the ringing gets loud,
give your ears something gentler.

Millions of people live with a constant ring, hiss or hum. Synra has a dedicated Tinnitus Relief scenario — colour noise and soft nature sounds chosen to sit over the ringing, so quiet evenings, focused work and falling asleep feel easier again.

Hear pink noise from the app

Bring the level up until your ringing just blends in.

Level45

Masking, not silence

Tinnitus is loudest when the room is quiet. A steady, gentle sound gives your brain something softer to listen to, so the ringing moves into the background.

Match the sound to your ringing

A low hum often blends best with brown noise; a high whine with white or pink. Try them and keep the one that makes the ringing hardest to pick out.

Find the mixing point

Sound therapy usually sets the level just below your tinnitus — so you still hear it faintly, blended in — rather than drowning it out at high volume.

Through the night

Pair it with the sleep timer so Synra fades out after you drift off, or let it run under work and podcasts with Backdrop Mode.

Synra offers sound-based masking and relief. It does not treat or cure tinnitus. If your tinnitus is new, only in one ear, pulses with your heartbeat, or comes with hearing loss or dizziness, please see a doctor or audiologist.

The library

A soundscape for every moment.
A beat under each one.

Rain on a forest, a lighthouse in fog, colour noise for tinnitus masking, solfeggio-tuned music and pure tones — in collections from Fall Asleep Fast to Deep Flow State.

The Emperor after the Curtain CallSleep · Nature

The Northern Lights are CallingSleep · Music

Mysterious Garden of EdenMeditate · Music

Inside the app

Made for your own rhythm.

Everything you need to make a session yours, and nothing that gets in the way of it.

Shape every session

Set how strong the beat is — Off, Low, Normal or High — and how loud the soundscape sits under it. Every scene shows its frequency and band, and tells you what you’re hearing.

OffLowNormalHigh

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SYNRA+

Backdrop Mode

Keep the beat — or your tinnitus masking — running under a podcast, playlist or audiobook. Synra mixes with other apps instead of stopping them.

Start from a scenario

Not sure what to pick? Tap what you need right now and Synra lines up the right sessions.

432Hz SleepTinnitus ReliefWake UpDeep Flow StateStop Overthinking

Synra collections: Deep Meditation and Sleep for Babies

8D audio

Immersive 360° sound that moves around your head — a collection engineered for headphones.

Colour noise for tinnitus

Brown, pink, green and white noise to mask ringing ears or a noisy room — plus pure tones with nothing but the beat.

Synra home screen with the 8D audio collection

Sleep timer

10, 20, 30, 45 or 60 minutes — or your own. Synra fades out when it ends, so the sound never cuts you awake.

10m20m30m45m60m

Your library

Heart the scenes that work for you. Favourites and recents sit together in Your space.

♥ FavoritesRecents

No account needed

Open it and listen. What you tell Synra during setup stays on your device and is only used to shape your experience.

Find your frequency

Dial in any beat, 0.5 to 60 Hz.

Left ear plays 200 Hz. Right ear plays 200 + 10.0 Hz. Your brain hears the difference as a slow pulse — that pulse is the binaural beat.

10.0Hzα AlphaCalm, relaxed focus

Headphones on, volume low. Through speakers you will hear the tone but not the beat. Living with tinnitus? Keep it gentle — a level just below the ringing is enough.

L · 200R · 210.0

How it works

Two tones. One pulse you can tune.

Play 200 Hz in one ear and 205 Hz in the other, and you perceive a gentle 5 Hz pulse that exists in neither. Brain activity tends to fall into a few rhythm ranges, each linked to a different state. Synra lets you pick the range that fits what you’re doing — and for tinnitus, pairs it with steady noise that helps the ringing fade into the background.

01Put on headphonesEach ear needs its own tone. Any wired or wireless pair works.
02Choose a goal or a sceneSleep, relax, focus, meditate or tinnitus relief — or start from a scenario.
03Give it 5–10 minutesSettle in, then keep listening for as long as it helps.

δDelta · Deep sleepThe slowest band. Dominates deep, dreamless sleep.0.5–4 Hz

θTheta · Drifting off, meditationBetween waking and sleeping — drowsy, image-led thinking.4–8 Hz

αAlpha · Calm, relaxed focusEyes closed, mind settled, still present.8–14 Hz

βBeta · Active focusConcentration, work and study.14–30 Hz

γGamma · Peak attentionFast, high-attention states.30–60+ Hz

FAQ

Questions, answered.

Something else? Visit support.

Your listening space is ready.

A little more calm — and a little less ringing — whenever you need it.

Download on theApp Store

Sleep · Relax · Focus · Meditate · Tinnitus