DreamCycle

DreamCycle is a simple sleep cycle calculator that tells you the best time to go to bed — or to set your alarm — so you wake up refreshed instead of groggy.
WHY IT WORKS
While you sleep, your body moves through cycles of about 90 minutes. Wake up in the middle of a deep phase and you'll feel tired, even after 8 hours in bed. Wake up at the end of a cycle and you get up light and clear-headed. DreamCycle does the math for you.
TWO MODES
⏰ "Wake up at…"
Tell it when you need to get up, and DreamCycle shows you several bedtimes that let you complete full sleep cycles.
🌙 "Sleep now"
Going to bed right now? One tap shows you the best times to set your alarm so you wake up between cycles, not in the middle of one.
FEATURES
• Based on 90-minute sleep cycles
• Accounts for the ~15 minutes it takes to fall asleep
• Highlights the best options (5–6 full cycles)
• Shows total sleep time and number of cycles
• Works completely offline — no internet needed
• No sign-up, no data collection
• No permissions required
• No ads
• Clean, calm night-time design
• Fast and lightweight
WHO IT'S FOR
— Anyone who struggles to wake up in the morning
— People with irregular sleep and wake times
— Shift workers
— Quick power naps
— Anyone who wants to sleep smarter, not just longer
DreamCycle collects no personal data, needs no account, and never connects to the internet. Every calculation happens right on your device.
Sleep by your cycles — and wake up refreshed. 🌙