Discovery. Harmony. Relaxation.
Sound has a measurable effect on the brain and body. Signalkind Frequency turns that science, and some time-honoured tradition, into a calm listening library for concentration, relaxation and sleep. Press play. That’s all there is to it.
Ninety tracks · offline · private · for all your Apple devices
A 40 Hz gamma track, playing offline
Ambient music, and pure frequency.
Every track wears its frequency openly, the band, the hertz and the purpose. Science-based content is always labelled apart from mindfulness tradition. Honest about the evidence, kind about the heritage.
Focus
40 Hz & 14 Hz-inspired ambience for deep work and study.
Calm
Daylight pads and sanctuary rain.
Reset
Soundscapes and releasing 396 Hz tones for meditation.
Sleep
Delta-band drift for deep, restorative nights.
Uplift
432 to 741 Hz tunings woven into warm piano light.
Five collections, one for every state
Focus, Calm, Reset, Sleep and Uplift, ambient music built around the brainwave band that matches the moment. Open the app, pick a state, press play.
- One tap to the sound that fits your state
- No feeds, no accounts, no noise
Pure frequency, produced to spec
Seven sections of precision sound, binaural beds, exact Solfeggio drones, calibrated noise colours and nature masking. Binaural tracks are clearly labelled “stereo headphones required”; isochronic, noise and nature work anywhere.
- Every tone shows its band, hertz and purpose
- Science labelled apart from tradition
A player that gets out of the way
Full-screen artwork and a live waveform, background playback, lock-screen controls and AirPlay. A sleep timer that ends in a gentle fade rather than a cut, built for drifting off.
- Sleep timer, 0.75× to 1.5× speed, 15-second skips
- All ninety tracks bundled in, works completely offline
Kept quiet, on purpose
Earn Signal Points for the time you give yourself, minutes listened, tracks discovered, favourites kept and days you showed up. Levels, milestone badges and shareable award cards mark the journey.
- Not a streak to defend, a rhythm to notice
- A written Guide explains how every sound is made
Nothing leaves your iPhone.
Your listening history, favourites and Signal Points stay on your device. No account, no analytics, no tracking. Nothing is shared unless you choose to share it yourself.
Simple pricing for Frequency.
Everything is open for your first 14 days. After that, one simple choice, and whatever you decide, the Milestones you’ve earned stay open, free forever.
14-day free trial
- All 90 tracks, both pathways
- Cancel anytime
Under £1.70 a month · 14-day free trial
- All 90 tracks, both pathways
- Best price per month
Pay once, keep it for good
- All 90 tracks, forever
- No subscription
Only your Milestones stay open, free forever. Everything else is open for your 14-day trial, then unlocks with any plan. Signalkind Frequency is a companion for concentration, relaxation and sleep, not a medical device, and no replacement for professional care.
From the makers of Signalkind
Checks a message before you send it, names what will land badly, and rewrites it in a tone you choose. Clarity · Kindness · Intelligence.