Most period apps tell you when. Kriva listens across your sleep, mood, energy and cycle, then tells you what your body needs today. After 21 days, it knows you well enough to call patterns by name.
Worldwide on iOS · Built for every hormone story · Android in beta
"When is my period?" is yesterday's question.
"What is my body asking for today?" is the one that runs your life.
You can be radically honest with your body's data, because there's no room for it to leak.
Hot flashes, sleep disruption, cramps, mood swings, Kriva names what's happening in physiological language you can actually use. "Your thermostat is recalibrating." Not "log a 4."
After 21 days of check-ins, Kriva builds a private model of your patterns, which symptoms cluster, when readiness drops, what your cycle actually looks like. Not a generic four-phase template.
You don't need a chart. You need one specific action, magnesium before bed, a 20-minute walk before 10am, riboflavin with breakfast. Pulled from your daily plan, scaled to your phase and signals.
The Pattern Engine watches your check-ins, sleep, energy and symptoms, and quietly builds a model of how your body moves through a month. No template. No "you must be in luteal because day 22."
Hormonal migraine? Heavy luteal mood crash? Endometriosis flare? Pick a protocol, supplements, lifestyle and food moves backed by evidence, and Kriva walks you through it. Mark today's actions. See if it actually moved the needle for you.
← Scroll through the daily ritual →
No account needed. Opens straight to today.
Most apps pick a lane. Kriva works across the whole landscape because the patterns rarely stay tidy, endometriosis overlaps with PMDD, PCOS shadows perimenopause, thyroid sits underneath them all.
No signup. No email. No "we collect your cycle to improve our services."
When your iPhone supports it, Kriva uses Apple's on-device language model for daily reads, no data leaves your device. When it doesn't, the curated fallback is just as warm.
No account. No login. Your name is optional. 7-day free trial on Kriva+.
The free tier lets you log everything and generate doctor-ready Visit Prep PDFs. Kriva+ opens the LLM daily read, Ask Kriva, and lab-trend view.
Prices are localized to your App Store region. Cancel any time in Settings. Apple handles all billing, Kriva sees only an anonymous entitlement token.
If you used Kriva before 1 September 2026, the app knows. You get 12 months of Kriva+ at no cost, applied automatically. Nothing to redeem, no code, no coupon. Just open the app.
Curious how Kriva compares to Oura, Whoop, Apple Health, or ChatGPT with a Health connector? Read why Kriva.