Support

A session paused when I switched apps

That's by design. Sylph has no background service and no notification — when you leave the app mid-session, it pauses and waits for you. Come back and tap to resume; it re-syncs with a short countdown so your breathing starts fresh on the inhale.

I don't feel anything / I don't hear anything

Haptics are on by default; sound is off by default. Both can be toggled from the session screen or from Settings. If your device has no vibration motor, the haptics toggle won't appear. If your device's motor doesn't support variable strength, Sylph falls back to a rhythm made of pulse timing instead of pulse strength.

I bought Pro and it shows locked

Open Settings → Restore purchases while signed into the Google account that bought it. Pro is a one-time purchase tied to your Google account, not to a device.

Why isn't Sylph asking for any permissions?

Because it doesn't need almost any. The only two are Google Play billing (to process a Pro purchase) and vibration (for haptics) — both install-time, neither ever prompts you. There is no camera, microphone, storage, notification or network access.

Why does a free session stop at 5 minutes?

Sessions up to 5 minutes are free forever. Sylph Pro unlocks 10-minute sessions and an open-ended "until I stop" length, along with every technique, theme and the custom pattern builder.

Feature ideas

Send them in — Sylph stays small and private, but the technique and theme library will keep growing (Pro includes everything we ever add).