Open source · Local first · Evidence labeled

Hear.
Inspect.
Decide.

SynSync Pro is an open-source browser audio laboratory for exploring rhythmic sound protocols. The full public library is available without an account or payment gate, with established, experimental, and exploratory material labeled in context.

Full
Public library
3
Evidence bands
0
Accounts required
$0+
Pay what and if you can
Why it exists

An open instrument,
not a black box.

Rhythmic audio can be interesting, useful, relaxing, or simply worth investigating. SynSync makes the signal, protocol settings, safety notes, and evidence boundaries visible so you can make an informed choice without a subscription funnel.

Inspectable

See what a protocol does

Carrier, beat, modulation, phase, duration, and source context are exposed instead of hidden behind a mood label.

Evidence bounded

Research is not a guarantee

Labels distinguish stronger support from experimental mechanisms and speculative exploration. The app does not promise medical outcomes.

Local first

Audio is built on your device

Web Audio runs in the browser. Session settings and history use local browser storage unless you deliberately export or share them.

Open access

Support is optional

The full public library remains available whether or not you donate. Contributions sustain development; they do not unlock protocols.

Signal building blocks

How the audio is built.

SynSync combines familiar digital-audio techniques. The analyzer and visualizer display the generated signal; they are not EEG, neurofeedback, diagnosis, or proof of a biological effect.

Stereo

Binaural patterns

Two nearby tones are delivered separately to the left and right channels. Headphones are required for the intended stereo separation.

Amplitude

Isochronic pulses

A tone or noise layer is rhythmically amplitude-modulated. This mode can be heard through speakers or headphones.

Layers

Noise and ambience

Optional sound layers can mask harsh edges and shape the listening environment without changing the stated protocol target.

Motion

Frequency sweeps

Multi-phase protocols can change carrier or beat settings over time, following the values disclosed in the phase timeline.

Safety

Volume and screening

Start quietly, read each safety note, and stop if uncomfortable. Some users should avoid rhythmic stimulation or seek clinical advice first.

Measurement

Signal views

Oscilloscope, spectrum, cymatic, and WebGL views react to Web Audio analyzer data while keeping the underlying FFT and audio path intact.

Trust model

Verify, don’t assume.

A confident headline is not evidence. The useful questions are what was studied, how directly it maps to the implementation, and where uncertainty remains.

Label

Read the evidence band

Research-backed, experimental, and exploratory protocols are presented as different categories, not blended into one promise.

Source

Inspect citations and context

Where sources are provided, follow them and assess the population, intervention, comparison, limitations, and relevance yourself.

Boundary

Keep audio separate from treatment

SynSync is an audio tool, not a medical device or substitute for diagnosis, medication, therapy, or emergency care.

Product principles
Tools that influence attention or experience should be inspectable, voluntary, and honest about uncertainty.
01

Inspectable by design

Source, signal settings, evidence labels, and safety boundaries remain available for review.

02

You stay in control

You choose the protocol, volume, duration, playback state, exports, and whether to support the project.

03

Local by default

The release does not include third-party analytics. External sponsor, source, and crypto links load only when you choose them.

The library

Full access.
Clear boundaries.

Browse the complete public catalog, including conservative calibration tools and clearly marked frontier experiments. Access does not depend on payment.

◌

Calibration & Safety

Preparation

Volume checks, channel tests, and introductory sessions.

☾

Rest-Oriented

Research-informed

Sessions framed around wind-down, relaxation, and sleep routines.

◇

Focus & Learning

Research-informed

Rhythmic audio patterns intended for attention and study contexts.

≈

Emotional & Reflective

Mixed evidence

Breathing, mantra, reflection, and guided listening combinations.

✦

Consciousness Exploration

Exploratory

Unusual-state and immersive protocols presented without equivalence-to-drug claims.

⌬

Advanced & Experimental

Experimental

Complex modulation and layered sequences with explicit uncertainty labels.

Privacy behavior

Local by default,
precise in the details.

The deployed release has no third-party analytics tag. Audio generation, playback analysis, preferences, and session history run in the browser. Network requests are still used to load the application itself, and external links contact their destinations only after you follow them.

On device

Audio processing

The Web Audio graph and visualizer execute in your browser; microphone input is not required for normal playback.

Your action

Local data and export

Preferences and history stay in browser storage until you clear them or explicitly export a file.

Transparent

No invisible telemetry promise

This release omits analytics and advertising scripts. Hosting still necessarily receives ordinary web requests for the files it serves.

Plain-language boundary: “Local first” does not mean the website can load without contacting its host the first time. It means SynSync does not add an analytics pipeline or upload your session history during normal use.

Keep it open

Pay what—and if—you can.

SynSync stays open whether you contribute or not. If it is useful and you are able, a one-time or recurring contribution helps sustain development. Donations do not unlock protocols, remove limits, or create a privileged tier.

Recurring or one time

GitHub Sponsors

Choose an amount directly through the project owner’s GitHub Sponsors page.

Sponsor on GitHub
Direct support

Crypto

Current wallet details are maintained on the project owner’s GitHub profile rather than copied into the app.

View crypto details
Get started

Explore the signal.
Keep the choice.

No download, account, or payment required. Begin at a comfortable volume, read the safety screen, and stop if you feel discomfort.

Open source · Not a medical device · Evidence labels do not guarantee outcomes