Sleep Cycle Calculator
Find better bedtimes, wake-up times, naps and sleep schedule
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A free online Sleep Cycle Calculator that helps you plan bedtime and wake-up times around approximate 90-minute sleep cycles. It also includes a nap calculator, caffeine cutoff, sleep debt, recommended sleep by age, sleep quality check, weekend recovery planner and jet lag adjuster — all in one simple browser tool.
PH · launched Sep 21, 2026 · 1 upvote (top 69%) · 0 views
Niche: specialized calculation tools · 551 launches, 66 in the last 7 days ▼ -7% · Explore this niche →
Category and tags
- Healthcare
- Workflow automation
- B2C
- Not AI
- Commercial product
- Health & Fitness
- Productivity
- Lifestyle
Visit website ↗ Source listing ↗
More like this: all 551 launches in specialized calculation tools →
Could you build this?
Yes It is a straightforward static web utility implementing basic mathematical arithmetic (adding/subtracting 90-minute blocks to timestamps).
Competitors
Other products that read as similar to this one : 855 launches clear the similarity bar, closest 8 shown.
Attention rank: #688 of 856 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 311 days after the earliest competitor.
- AllSleepCalculators · ph · 2026-10-21 · 1 upvotes · similarity 0.85
- Sleep Time Calculator · ph · 2026-09-22 · 1 upvotes · similarity 0.82
- Dozofy · ph · 2026-09-30 · 1 upvotes · similarity 0.80
- Caffeine Timing Calculator · ph · 2026-10-28 · 2 upvotes · similarity 0.69
- Timespanly · ph · 2026-10-17 · 1 upvotes · similarity 0.56
- sleepcalculator · ph · 2026-10-22 · 1 upvotes · similarity 0.56
- Calquza Caffeine Half-Life Calculator · ph · 2026-10-26 · 1 upvotes · similarity 0.55
- Sleep Rhythm · ph · 2026-10-15 · 1 upvotes · similarity 0.55
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