Forecast: Cycle Syncing
Your cycle, as the weather
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Someone glances at your phone and sees a storm front rolling in. To them it's the weather. To you it's the week before your period.
Forecast is a period and cycle tracker built inside a real weather app. The sky shows where you are in your cycle. Rain is your period. Clearing skies are the follicular days. A bright sky is ovulation. It clouds over through the luteal phase, and a storm builds in the days before your period. There's a seven-day outlook and a month calendar underneath, like any weather app. Tap once and the real dates are there.
Most apps name a single exact day your period will arrive. Then it doesn't come, and you lose three days sure that something is wrong. Forecast anchors ovulation to about 13 days before your next period, then hands you a window and marks it "estimated" until your own logs tighten it. It learns from your last three cycles, and the more you log, the smaller the window gets. When a forecast lands inside its window, the app tells you, so you watch it get things right before you trust it.
Log your morning temperature and Forecast confirms ovulation from the rise in your readings, after it happens, the way the symptothermal method works.
Your data never leaves your phone. No account, no sign-in, no cloud, no trackers. Because it looks like weather, you can open it on the train or hand it to a friend and nothing shows.
The sky is drawn live. Clouds drift, the light moves across the day, rain falls, stars come out.
Forecast is not a contraceptive or a medical device.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A ground-up visual refresh: deeper, more cinematic skies and cleaner cards.
The 7-day view is rebuilt: your week as seven honest days, with your brightest one called out.
Import your history from Apple Health, so your forecast is personal from the first day.
Share a gentle, private heads-up with a partner. You write it, you control it, and it never shows your cycle.
Sharper predictions: the forecast now handles spotting, irregular and long cycles, and time zones correctly.
The developer, MARION MORANETZ, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- MARION MORANETZ
- Size
- 5.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 Marion Moranetz