Sleep Cycle Calc Wake up at the right moment

Plan bedtimes, wake times, and naps around natural sleep cycles. Simple, private, and optimised for iPhone.

App Store (coming soon)

Light & Dark themes • No account • No Ads - Ever

Cycle‑aware

Shows ideal bed/wake times aligned to ~90‑minute sleep cycles.

Smart naps

Pick Power, Short, Long, or Recovery naps — we calculate gentle wake times.

Privacy first

No accounts or tracking. Your settings stay on device.

Screenshots

Wake tab (light)
Sleep tab (light)
Nap tab (light)
Hours calculator (light)
Time calculator (light)

Actual UI shown. Light/Dark follow your iPhone setting.