Sleep Cycle Calculator
Wake up refreshed by timing your 90-min sleep cycles
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Read the full description
A free sleep calculator built around natural 90-minute sleep cycles. Enter when you need to wake up, or when you’re going to bed, and get the best times to sleep or set your alarm so you wake between cycles. Adjust fall-asleep time, cycle length and age group. It also includes a power-nap timer that avoids grogginess and a 7-night sleep debt tracker. No signup, no app needed.
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PH · launched Oct 15, 2026 · 2 upvotes (top 23%)
- Healthcare
- Analytics & BI
- B2C
- Not AI
- Hobby / open-source project
- Health & Fitness
- Productivity
- Lifestyle
Similar launches
See all 552 similar launches →Could you build this?
Yes This is a client-side calculator that adds or subtracts 90-minute increments to a given timestamp, easily vibe-coded in an afternoon.
Competitors
Other products that read as similar to this one : 552 launches clear the similarity bar, closest 8 shown.
Attention rank: #65 of 553 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 335 days after the earliest competitor.
- Dozofy · ph · 2026-09-30 · 1 upvotes · similarity 0.79
- WakeUp: Alarm Clock & Goals · ph · 2026-09-12 · 2 upvotes · similarity 0.60
- MVP launch · ph · 2026-10-06 · 2 upvotes · similarity 0.60
- Sleep Session · ph · 2026-10-01 · 1 upvotes · similarity 0.59
- Sleep Diary · ph · 2026-09-16 · 1 upvotes · similarity 0.59
- WakePlan · ph · 2026-10-18 · 2 upvotes · similarity 0.57
- Sleep Sanity · ph · 2026-09-29 · 1 upvotes · similarity 0.56
- Shift Alarm: Shifts & Holidays · ph · 2026-10-02 · 1 upvotes · similarity 0.56
Other launches for this product
More details
- External ID
- 1276964
- Company
- n/a
- Product
- Sleep Cycle Calculator
- Website domain
- producthunt.com
- Cohort
- n/a
- Upvotes percentile
- 0.77
- All tags
- Health & Fitness, Productivity, Lifestyle
- AI summary
- sleep cycle calculator to optimize wake times
- Manually corrected
- No