Cycle stacking, made simple
Get one practical morning text with food, movement, planning, and logging guidance based on your exact cycle day.
Free during early access
What Day 1 does
Knowing the cycle day is useful. Knowing what to do with it is better.
Day 1 turns the current cycle day into a practical starting point for food, movement, work, social outings, recovery, symptoms, and rest. One short text in the morning, then the app is there when you want to log or plan.
The morning text
Each morning, Day 1 uses your cycle day and patterns to share the most useful food, movement, energy, and connection tips for that day.
Fueling ideas that may fit the week, such as warmer meals during your period or a larger lunch in the luteal phase.
Gentle framing for the day's workout. Stronger sessions on higher-energy days. Recovery walks or lighter lifts when useful.
A read on capacity. Days that may suit focused work or a bigger push, and days worth protecting from too much at once.
A small heads-up on how you may want to show up socially and with your partner, so plans and closeness fit the week.
One short, practical note with the most useful focus for today.
A practical difference
Two different tools. Two different jobs.
A period tracker
Day 1
Food stack
Appetite, cravings, and training needs can shift across the month. Day 1 offers phase-aware fueling ideas as a starting point, not a rigid rulebook.
Menstrual
Warm meals. Iron-rich foods. Extra hydration.
Follicular
Fresh meals. Protein at every meal. Carbs when training harder.
Ovulatory
Fuel higher-output days. Avoid underfueling. Fiber to steady energy.
Luteal
Larger lunch. Complex carbs. A planned snack instead of a raid.
Personalization
Log symptoms, mood, energy, hunger, sleep, movement, flow, and libido. Day 1 uses your history to compare the same cycle day across cycles, so the guidance gets more specific to you over time.
No streaks. No catching up. One useful log is enough.
Real weeks
Day 1 offers a useful starting point. It does not require a perfect routine.
Optional partner support
He can finally understand where you're coming from, and meet you where you are without having to ask or guess.
Same cycle day, different message. His text is written for how to show up: what tends to feel good this week, what may land well, and what to be gentle around. No logs, no charts to read. Just a short, kind heads-up so the two of you are on the same page.
You choose what he sees
Raw logs are never shared. You can turn access off any time.
FAQ
Period trackers focus on prediction. Day 1 focuses on daily practice. It uses your cycle day as a starting point for food, movement, planning, and logging guidance, delivered once each morning.
No. Day 1 is a daily practical guide, not medical advice. For symptoms that concern you, talk to a clinician.
Day 1 works from the start of your last period and updates as you log. Irregular cycles, post-pill cycles, perimenopause, and postpartum are welcome. Guidance stays practical rather than prescriptive when patterns are still settling.
Partly. On continuous or suppressive hormonal birth control, your natural cycle patterns are muted, so phase-based framing may not fit the same way. Day 1 can still offer daily practical ideas for food, movement, planning, and logging, and you can turn phase framing down in Settings.
A partner-only summary with practical ideas and phase context. Never your raw logs. You choose which categories are visible and can turn access off any time.
Day 1 does not sell your data, does not share it for ads, and does not train models on your logs. You can delete your data from Settings.
Yes, free during early access. If pricing changes later, existing early-access members will get advance notice.
Get one practical morning text with food, movement, planning, and logging guidance.
Free during early access