Period Tracker

Your cycle,
simply tracked.

A simple, lightweight period tracker that predicts your next period, ovulation and fertile window, so you always know what is coming.

Get it on Google Play
Period Tracker calendar for September 2026 with period, ovulation and fertile days colour-coded Period Tracker home screen showing the cycle day, next period date, fertile window and ovulation tiles

Simple by design

Track. Predict. Remind.

Three things done well, in an app that stays light and easy to use.

  • Track

    Log your period dates and how you feel, day by day, in one place.

  • Predict

    See your next period, estimated ovulation date and fertile window at a glance.

  • Remind

    Get gentle reminders before your period and before ovulation.

Features

Everything you need to understand your cycle

From a colour-coded calendar to a one-tap daily log, built around the way you actually track.

  • Colour-coded calendar

    Past, current and upcoming cycles in one calendar, with period, ovulation and fertile days easy to tell apart.

  • Period & ovulation predictions

    Know when your next period is due, plus your estimated ovulation date and fertile window.

  • One-tap daily log

    Add symptoms, water, medicines, temperature and weight from a single plus button.

  • Period & ovulation reminders

    Turn on reminders to hear from the app a few days before your period and before ovulation.

  • History & averages

    Look back at past cycles and see your average period length and average cycle length.

  • Made for your cycle

    Supports regular and irregular cycles. Set your cycle and period length, and edit your dates any time.

Daily log

Log your day in one tap

Tap the plus button on any screen and add the details that matter, in a few seconds.

Tap plus to log

  • Symptoms Note how you feel today
  • Water Keep track of what you drink
  • Meds Record your medicines
  • Temp Log your body temperature
  • Weight Follow it over time

Inside the app

A closer look at every screen

Pick a screen to see how it works.

Period Tracker home screen with the current cycle day, next period date and cycle tiles

Your day at a glance

Open the app and see where you are in your cycle right away. Everything important sits on one friendly screen.

  • Current cycle day and your next period date
  • Tiles for your fertile window, ovulation date and next period
  • An Edit Period button when your dates change
Period Tracker calendar for September 2026 showing period days, an ovulation day and fertile days

A calendar that colours your cycle

Flip through past and upcoming months. Every kind of day has its own colour, so you can read your cycle in a second.

  • Period day
  • Ovulation day
  • Fertile day
  • Tap any date to see its cycle day
  • Move between months with one tap

Tap plus to log

  • SymptomsNote how you feel today
  • WaterKeep track of what you drink
  • MedsRecord your medicines
  • TempLog your body temperature
  • WeightFollow it over time

Log how you feel in one tap

A single plus button opens quick actions, so adding details to your day takes seconds.

  • Symptoms, water, medicines, temperature and weight
  • Always one tap away, on every screen
  • Keep everything about your cycle in one app
Period Tracker history screen with average period length, average cycle length and a bar for each past cycle

See your patterns over time

Your history shows how each cycle played out, so changes are easy to spot.

  • Average period length and average cycle length
  • A bar for every past cycle, from start to finish
  • Helps you notice when your cycle changes
Period Tracker settings with period and ovulation reminders, cycle length and period length

Set it up around you

Tell the app about your cycle once, then fine-tune whenever life changes.

  • Period and ovulation reminders you can switch on or off
  • Your own cycle length and period length
  • Language and your privacy policy in one place
Period Tracker home screen in the Autumn leaves theme Period Tracker home screen in the Fresh meadow theme Period Tracker home screen in the Unicorn sky theme

Make it feel like yours

Pick a theme that suits your mood. Every theme keeps the same simple layout, only the look changes.

  1. Autumn leavesWarm falling leaves on a soft rose sky.
  2. Fresh meadowA calm green glow with a bright green button.
  3. Unicorn skyFluffy clouds and a friendly unicorn.

How it works

Up and running in three steps

  1. Set up your cycle

    Enter your last period date, your cycle length and your period length. You can change them whenever you like.

  2. See your predictions

    The Today screen and the calendar show your next period, ovulation date and fertile window.

  3. Log and get reminders

    Add symptoms, water, medicines, temperature and weight, and turn on reminders so nothing surprises you.

Privacy

Your cycle data, kept simple

Cycle information is personal. The app is built to ask for as little as possible.

  • No account needed

    Start tracking straight away, with no sign-up.

  • Stays on your device

    According to the developer, your period and fertility data stays on your phone.

  • Encrypted in transit

    Any data that does leave your phone is encrypted while it travels.

For the full list of what the app collects or shares, see the Data safety section on Google Play.

FAQ

Questions, answered

What is iChums Period Tracker?

iChums Period Tracker is a simple, lightweight period tracker. It shows your cycle on a calendar, predicts your next period, and estimates your ovulation date and fertile window.

Can I track ovulation and my fertile window?

Yes. The app estimates your ovulation date and fertile window from the dates and cycle length you enter, and shows them on the Today screen and in the calendar.

Does it work with irregular cycles?

Yes. The app supports both regular and irregular cycles, and you can edit your period start and end dates whenever your cycle changes. Estimates can be less precise when your cycles vary a lot.

What can I log each day?

Tap the plus button to log symptoms, water, medicines, body temperature and weight.

Do I need an account?

No account is required. According to the developer, your period and fertility data stays on your device. For full details, see the Data safety section on Google Play.

Can I use it to prevent pregnancy?

No. iChums Period Tracker gives estimates based on the dates you enter. It is not a medical device and should not be used as a method of birth control or to diagnose any condition.

Where can I download iChums Period Tracker?

iChums Period Tracker is available on Google Play for Android devices.

iChums Period Tracker app icon

Ready to know your cycle better?

Download iChums Period Tracker and get your first predictions in minutes.

Get it on Google Play