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Nadi vs Flo: which fits how you plan?
Flo is one of the best-known period tracking apps in the world. Nadi is not trying to be a better Flo — it is built for a different job: putting your cycle phases inside the calendar where you already plan your life.
The short version
Flo (by Flo Health, flo.health — not to be confused with MyFLO by Flo Living) is a standalone app centred on period and ovulation prediction, day-to-day logging and health insights, with content covering everything from cycles to pregnancy. Nadi is a calendar overlay: it estimates your four cycle phases — menstrual, follicular, ovulatory and luteal — and writes them into your Google or Apple calendar, so planning around your cycle happens where your meetings already live. There is no new app to open and no daily logging to keep up.
Side by side
| What matters | Nadi | Flo |
|---|---|---|
| Where you see your cycle | Inside the Google or Apple calendar you already use | Inside the Flo app |
| New app to download | No — set up once on the web, then live in your calendar | Yes — a standalone mobile app |
| Core focus | Planning work and life across all four phases | Period and ovulation prediction, logging and health content |
| Daily logging | None required — three inputs at setup | Encouraged; predictions refine with what you log |
| How estimates are framed | Openly published method; estimates, stated as estimates | App-based predictions from your logged data |
| Workplace education | Yes — sessions and support for teams | Not its focus |
We aim to be fair: Flo's features change over time, and details here are correct as far as we know at the time of writing. Always check Flo's own site for current features and pricing.
Where Flo is the better fit
If you want detailed day-to-day logging, content about a broad range of health topics, or support through pregnancy, a dedicated app like Flo is built for exactly that. Nadi deliberately does none of those things.
Where Nadi is the better fit
If your real problem is planning — you know your cycle affects your energy, focus and capacity, but nothing in your calendar helps you see it — then an overlay beats another app. Your phases sit alongside your meetings, weeks and months ahead, with a method we publish openly and honest framing throughout: Nadi is a planning tool, not an ovulation predictor or contraceptive method.
Add your cycle to your calendarNew to the phases? Start with the four cycle phases, or see the full round-up of period trackers that sync with your calendar.