Sathi: Period & Menopause

Sathi is a calm, private companion for your whole hormonal life - from your first period through perimenopause and beyond.

Most apps make you switch. One for tracking your cycle in your twenties, another one when things start changing in your forties. Sathi is both, and it follows you between them.

TRACK YOUR CYCLE
- Log period start and end, flow intensity, and pain on a 0-10 scale
- A colour-coded calendar of your logged cycles and your predicted next period
- Predictions come with a confidence range, so you know how sure they are
- An informational fertile-window estimate

PERIMENOPAUSE, PROPERLY
- Track hot flashes, night sweats, sleep, brain fog, mood and cycle changes
- Watch how symptoms move over weeks and months, not just today
- Built for irregular cycles, when a single "next period" date stops being the point

A 30-SECOND CHECK-IN
Mood, energy, sleep and cramps in a few taps. Log from the Home Screen widget, from Apple Watch, or by asking Siri.

INSIGHTS THAT WAIT FOR SIGNAL
Sathi surfaces a pattern when there is one - cycle length trends, pain trends, symptom frequency, sleep quality. No filler cards to make the screen look busy.

APPLE HEALTH, ON YOUR TERMS
Optionally read sleep and heart rate from Apple Health for better context, and write your period days back so the rest of your iPhone stays in sync. You choose every data type, one by one. It is off until you turn it on.

PRIVATE BY ARCHITECTURE
- Your logs are encrypted on your device before they ever leave it
- Optional cloud sync stores ciphertext only - we cannot read your entries
- Lock Sathi behind Face ID or Touch ID
- Export everything as a file, or delete your account and all its data, from Settings
- No ads, no ad trackers, and we never sell your data

AVAILABLE IN
English, Spanish, French, German, Italian, Dutch, Japanese, Korean, Arabic, Hindi and Bangla.

SATHI PRO
An optional subscription unlocks doctor-ready reports, symptom correlations, your full history and multi-device sync. Core tracking stays free.

IMPORTANT
Sathi is a wellness app. It is not a medical device, it does not diagnose or treat any condition, and the fertile-window estimate is provided for information only - it is not a method of contraception. Talk to your doctor about any question related to your health.

SUBSCRIPTION
Sathi Pro is an auto-renewing subscription, offered monthly or annually. Payment is charged to your Apple Account at confirmation of purchase. It renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel it in your Apple Account settings.
Terms of Use: https://sathidays.com/terms
Privacy Policy: https://sathidays.com/privacy