The questions we get most.

Kriva listens. It reads what your iPhone and Apple Watch already know — sleep, heart, cycle, temperature, movement — and asks you one or two honest questions a day about mood and symptoms. From that it composes a daily read in plain physiological language ("your thermostat is recalibrating") and one action that fits today. After 21 days, the Body Twin starts naming the patterns it sees in your data.

No. The entire daily ritual works without an account. No email, no password, no signup screen blocking you. Sign in with Apple lives in Profile as an optional surface — you can ignore it forever and the app keeps working.

On your phone. If you're signed into iCloud, it also syncs across your own Apple devices through CloudKit's private database — that's stored in your iCloud account, not on any server Kriva operates. We cannot read or recover it. Full detail in our Privacy Policy.

All of them, in different ways. Kriva is built to listen to the daily signals that show up across PMS, PMDD, PCOS / PMOS, endometriosis, perimenopause, thyroid-driven cycle changes, and any other hormone-related disorder. The signals — cravings, bloat, sleep, mood, energy, pain — are shared across these conditions. Your patterns tell us which ones are loudest for your body, and the daily reads adapt to that.

"PCOS" is being renamed to "PMOS" — Polycystic Metabolic Ovarian Syndrome — to reflect what research has shown for years: it's primarily a metabolic disorder, not just a reproductive one. Insulin resistance, blood sugar volatility, inflammation — these are the daily forces behind the cysts. Kriva's metabolic-aware daily reads are especially useful here, but the same listening works for PMS, PMDD, and perimenopause too.

Because lifestyle is what you actually control today. Kriva's reads are small, doable moves — front-load protein, walk after lunch, dim screens by 9pm, magnesium before bed, a five-minute breath practice — tuned to your cycle phase and what you logged this morning. Not prescriptions. Not generic advice. The next small thing your body is asking for.

Flo and Clue tell you when your period is coming. Kriva tells you what your body is asking for today — and after 21 days, names the patterns it has noticed in your own data. Same category, very different job. Kriva also keeps your data on your device by default; Flo and Clue require a cloud account.

A private model of your patterns, built from your daily check-ins. After about 21 days the Pattern Engine starts naming things — symptom clusters, readiness drops, what shifts before your period, what your cycle actually looks like. It's rule-based, on-device, and transparent: Kriva shows the data behind every pattern call. Not "you must be in luteal because day 22."

7-day protocols you run on yourself with Kriva's coaching. Pick a focus — hormonal migraine prevention, luteal mood, PCOS / PMOS insulin support, perimenopause sleep — and Kriva walks you through daily actions: supplements, lifestyle, food. You mark today's tasks. At the end of the week, you see if the protocol actually moved the needle for you.

When your iPhone supports it (iPhone 15 Pro and later, iPhone 16+, M-series iPads with Apple Intelligence), Kriva uses Apple's on-device language model for daily reads — no data leaves your device. When it doesn't, Kriva falls back to curated copy that's just as warm. For "Ask Kriva" questions that need fuller context, signals are sent to Anthropic per-query and forgotten (not retained, not used for training). Every cited fact links to its source.

Reads are pattern suggestions, not diagnoses. The first few days they're based on your cycle phase and the signals you log. After two weeks, Kriva starts using your own patterns to refine the read. After a full cycle, it's much sharper — because it knows you, not just "women on cycle day 18".

No. Kriva is a wellness tool, not a medical device. Don't use it to diagnose a condition, plan contraception, or replace a doctor. If you have or suspect a health condition, please consult a qualified healthcare provider.

The core daily ritual — Today's read, Evening Close, Body Twin patterns, Cycle calendar, and Hormone Experiments — is free during early access. Some advanced features may eventually be offered as a paid subscription. We will never gate the basic loop behind a paywall.

In beta. The Android build (Material 3, Health Connect, home-screen widget, Wear OS companion) is feature-aligned with iOS but still finishing polish before public release. If you want early access, tell us on X.

Yes — both. Go to Profile → Privacy. Export your logs as a JSON file, or wipe everything in one tap. If you've also synced via iCloud, deleting from the app removes the iCloud copy too. Deletion is permanent.

No advertisers, no data brokers, no profiling vendors. The third parties involved are: Apple (CloudKit syncs your data into your own iCloud account — Kriva can't see it); Anthropic (relevant signals are sent for each daily AI reading, then forgotten — not retained, not used for training); and PostHog for anonymous usage analytics (on by default, fully anonymous, one tap to turn off in Profile → Analytics). Full detail in our Privacy Policy.

Yes. Perimenopause is one of the times your daily signals get loudest and most confusing — irregular cycles, hot flashes, sleep changes, mood shifts. Kriva treats irregularity as data, not a failure to predict. You log what's happening and Kriva surfaces the pattern.

Kriva is not designed as a fertility tracker and is not a contraceptive device. For conception planning, please use a tool designed for that purpose and consult your doctor.

Worldwide. Available on iOS in any country where Apple distributes apps. The app speaks English today, with more languages on the way.

13 or older. Kriva discusses cycles, symptoms, and mental-health patterns, and surfaces crisis-line resources when sustained difficulty appears. The 13-plus minimum aligns with the App Store age rating and with the COPPA threshold in the US. EU users in jurisdictions where the digital-consent age is higher (default 16 under GDPR Article 8) should comply with their local rule. See our Terms of Use for the full minimum-age clause.

Two ways: DM @kriva_ai on X, or use Settings → Send feedback inside the app. No support inbox to disappear into.

A small team that believes daily signals matter more than calendar predictions — and that women's health deserves a product that listens. We're based in India and built for women everywhere.