Cycle tracker for him

Her month, understood.

Know where she is in her cycle and what actually helps today. One tap a day, a short playbook, and nothing leaves your phone.

Free on iPhone · No account · No cloud

TideBook Today screen: premenstrual, day 26 of 29, with three playbook tips such as 'Take the stress off her. Rub her feet.'

Every day, at a glance

Know how to show up today.

Open the app and you see which part of her cycle she's in, what usually comes with it, and a few concrete things that help right now.

  • Where she isThe current phase and day, in plain language.
  • A short daily playbookPractical things to do: take a chore off her plate, keep plans light, have her snacks within reach.
  • The next two weeksA 14-day outlook so nothing catches you off guard.
Today screen on day 2 of her period, with tips like 'Have painkillers and her snacks already within reach.'
Day 2
Today screen on day 26, before her period, with tips like 'If she snaps, don't take it personally.'
Day 26

Learns as you log

Your pattern. Not the textbook average.

Most cycle apps for men show the same formula. TideBook starts there, then learns from what actually happens in your relationship.

One tap a day is enough. The more you log, the more the forecast moves from the textbook curve toward your own.

Cycle screen: day 15, fertile window, with a chart comparing the textbook curve, the predicted curve and logged days.

The whole setup

One date. That's it.

Enter the day her last period started. TideBook does the rest and asks for one tap a day after that.

Setup screen asking when her last period started, with month, day and year pickers.

Private by design

Nothing ever leaves this phone.

No account. No cloud. No tracking. Everything you enter stays on the device, and you can erase it at any time.

Read the privacy policy

Settings screen showing cycle length, next period estimate and 'Stored on this device only'.

For her

Tired of explaining it every month? Send it to him.

TideBook tells him where you are and what usually helps that day, so the tea, the patience and the space show up before you have to ask.

Pricing

Free to start.

Pro shows what's ahead and adapts as you log.

Free

$0

No account needed

  • Today's phase
  • One daily tip
  • One-tap logging

TideBook Pro

$2.99 / month

or $19.99 a year, 44% less than monthly

  • 14-day forecast and the full cycle chart
  • Predictions that learn from your logs
  • The complete daily playbook
  • The three strongest upcoming days at a glance

US prices. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period, and are managed in your App Store account.

Download on the App Store