Period Trackers That Sync With Your Calendar

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Most period apps keep your cycle inside the app. That’s fine for logging, but it means your cycle and your plans never meet: you check one app for your phase and another for your week. A small group of apps fixes that by putting your cycle into the calendar you already use.

This guide compares the options we know of, what each one actually puts in your calendar, and which calendars it works with. A note before we start: Kilova is our app, so we’ve stuck to what each product says about itself and told you where we couldn’t confirm something. If you spot something out of date, tell us in the comments and we’ll fix it.

What to Look For

Phases, not just your period. Many options only add period days (and sometimes a fertile window). For cycle syncing you want all four phases: menstrual, follicular, ovulatory and luteal. (What are they?)
Your calendar. Google Calendar, Apple Calendar, Outlook, or more than one.
Dates that update. A cycle isn’t the same length every month. Good tools move your phases when you log a new period instead of repeating a fixed pattern.
Your plans, too. Some tools only show phases; others let you plan tasks and routines by phase and send those to your calendar as well.
Privacy. Your calendar might be shared with a partner or colleagues. Check that cycle events go into their own calendar so you control who sees them.

The Options

1. A repeating event (free, any calendar)

Add an all-day “Period” event that repeats every 28 days, or your usual length.

Good: free, private, works in every calendar.
Not so good: it drifts as soon as a cycle is shorter or longer, and it only shows your period, not the phases.

2. Kilova: Google Calendar, Outlook and Apple Calendar

Kilova is a cycle-syncing planner on iPhone, Android and the web. It works out your four phases from the periods you log and puts them in your calendar, each phase in its own colour.

Calendars: Google Calendar (two-way: your Google events come into Kilova too), Outlook (in its own Kilova calendar, with your Outlook events in Kilova), and Apple Calendar on iPhone and iPad (Kilova writes into it, and iCloud brings it to your Mac and Apple Watch).
Beyond phases: tasks and events you plan in Kilova go to your calendar too, coloured by phase. Phase repeat brings a routine back in the same phase every cycle, and Phase Presets add ready-made routines (yoga, strength, seed cycling, period prep and more) in one tap. A switch lets you send only your phases if you prefer.
Also: symptom logging and Cycle Insights by phase.
Price: tasks and events are free for as long as you like. Calendar sync and routines are part of Premium ($4.99 a month or $49 a year), and new accounts get 2 months of Premium free.

Step by step: Google Calendar, Outlook, Apple Calendar.

3. Nadi: Google and Apple Calendar

Nadi describes itself as an overlay that brings your menstrual phases into the calendar you already use, Google or Apple, so you see your cycle while planning your week. When it launched on Product Hunt, its founder said it was in beta. We couldn’t find details on pricing or on whether you can plan routines with it.

4. Phase: cycle syncing for work

Phase focuses on work: it brings cycle insights into your meetings, tasks and calendar so you can place deep work and important meetings by phase. A launch review describes connections with Google Calendar and Office 365. Good if your interest is mainly productivity. (There are a few different apps called “Phase”, so check you have the work-focused one.)

5. Period trackers with a calendar export

Some classic period trackers can copy your upcoming periods into your phone’s calendar. For example, the iPhone app Period Tracker by Sevenlogics says it can sync your next 12 periods and fertile days to your calendar. Handy if you only want period dates; you won’t get the four phases.

6. A spreadsheet or Notion template

If you like building your own system, a template can work out your phase for each day. It’s flexible and free, but nothing reaches your calendar unless you copy it in yourself. We wrote one you can copy: how to build your own cycle syncing template.

Quick Comparison

Option	Calendars	Four phases	Plan routines by phase	Updates with your cycle	Price
Repeating event	Any	No	No	No	Free
Kilova	Google, Outlook, Apple	Yes	Yes	Yes	Free; sync with Premium (2 months free)
Nadi	Google, Apple	Yes	Not stated	Not stated	Not stated
Phase (work)	Google, Office 365 (per review)	Yes	Work-focused	Not stated	Paid plans
Period tracker with export	Phone calendar	No (periods, fertile days)	No	Varies	Varies
Spreadsheet / Notion	None	Yes	Yes, by hand	When you update it	Free

Which One Is Right for You?

You only want period dates in your calendar: a repeating event, or a tracker with a calendar export.
You want your phases next to your plans, and routines that follow them: a planner like Kilova.
Your focus is only work: a work-focused app like Phase.
You love building systems: a template, if you don’t mind keeping it up to date.

For a wider look at apps, journals and templates, see the best planners for cycle syncing and the best cycle syncing apps.

Frequently Asked Questions

Can Apple Health or Google Calendar track my phases on their own? No. Apple Health predicts your period inside the Health app, and Google Calendar and Outlook only have fixed repeats. Neither knows about phases.

Is it safe to put my cycle in a shared calendar? Use a separate calendar for it. Kilova always uses its own calendars, so you decide whether to share them.

Do I need Premium in Kilova to see my phases? Inside Kilova, no. To send them to Google, Outlook or Apple Calendar, yes, and new accounts get 2 months free to try it.