Support

What is Pure Phase

Pure Phase is a free iOS app that uses synchronized light flicker, isochronic audio tones, and breath pacing to guide you into specific mental states: focus, calm, and sleep. It is a tool, not a content platform. There is no narration, no subscription, and no account required.

Getting started

Tap any of the four tiles on the home screen to begin immediately with your last saved settings. Hold any tile to configure duration, audio, and breath options before starting.

The four modes

BREATHE

Guided breathwork with an animated breath ring. No flicker. Choose from Coherence, 4-7-8, Box, or Slow Wave patterns, or build your own in Advanced settings.

FOCUS

40 Hz gamma frequency. Associated with peak mental clarity and focus.

CALM

10 Hz alpha frequency. Associated with relaxed, aware states.

SLEEP

2 Hz delta frequency. Associated with deep sleep onset. Best used with torch enabled and eyes closed.

Pure Phase uses rapid rhythmic light pulses. Do not use if you are photosensitive or have a history of epilepsy or seizure disorders. Always use in a safe, seated, stationary environment. This app is not a medical device and makes no medical claims.

Audio

For the best experience use headphones or a good speaker. The isochronic tone layer pulses at the brainwave frequency; this is the entrainment signal. The ambient texture layer (pink noise, brown noise, or drone) provides continuity and environmental masking underneath.

Advanced

Tap ADVANCED on the home screen to access additional states (Theta, SMR, Psychedelic, Void), custom Hz tuning, custom breath timing, and carrier frequency selection. These states have less clinical research behind them than the three primary states and are labeled accordingly.

Torch and eyes-closed mode

Enable the torch toggle in session config to use your iPhone's flashlight for eyes-closed entrainment. This is the recommended mode for SLEEP. The screen dims automatically when torch is enabled.

Troubleshooting

No audio. Check that your device is not on silent and that audio is enabled in session config.
Torch not available. Torch is only available on iPhone. It is hidden on iPad and Mac.
App feels too intense. Try reducing session duration, turning color mode off, or starting with BREATHE rather than an entrainment state.
Restore Defaults. Available in session config. Resets all settings to recommended starting values.

Contact

Mark Friedlander
markfriedlander@yahoo.com