478 Breath

Practice every day, rediscover your calm. Follow the breathing nebula through the classic 4-7-8 rhythm, with Apple Watch HRV recorded around every session.

478 Breath is a minimalist guided breathing app that pairs the classic 4-7-8 technique with your Apple Health heart rate variability (HRV) data — so you don't just practice, you see the effect.

— A breathing nebula — No rigid expanding circle. The home screen is a living nebula that gently pulses at your recent breathing rate, its color shifting with today's HRV. Inhale, hold, and exhale along with it.

— Multiple rhythms — 4-7-8 (classic calm), 4-4-6 (beginner), 4-8-8 (longer hold), 4-8-10 (deepest relaxation). Set any length from 1 to 30 minutes, with voice guidance that follows your system language.

— See your change — With Apple Watch, the app reads your HRV before and after a session and charts your trend across Today, 30 days, 12 months, and beyond — real data to keep you going.

— Privacy first — Everything stays on your device. No account, no ads, no third-party tracking. None of your data ever leaves your iPhone.

478 Breath is for relaxation and personal wellness only and is not medical advice.

— 478 Breath Premium (optional subscription) — Unlocks all breathing rhythms, sessions beyond 10 minutes or unlimited, all ambient soundscapes, and adaptive HRV alerts. US$0.99/month or US$9.99/year. Eligible new subscribers may receive a 1-month free trial; prices may vary by region. The yearly plan costs less than paying monthly — the paywall shows exactly how much you save in your region. Payment is charged to your Apple account; subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in App Store settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://supercyber.studio/en/apps/478-breath/privacy.html