Hello Phase

Yes, period logging, predictions for your next three cycles, the calendar, reminders, the daily check-in, the hormone chart, a small home screen widget and data export are all free, with no ads. Hello Phase Plus is optional, and the pricing section above lists exactly what it adds.

In the US, Plus costs $39.99 a year or $12.99 a month on Google Play. New subscribers may see an introductory price of $0.99 for the first two weeks or the first month of the yearly plan, and prices in other countries differ.

No, Hello Phase is only on Android through Google Play for now, and there is no iPhone version in the App Store today.

You cancel in Google Play, not in the app. Open Google Play, tap your profile, then Payments and subscriptions, then Subscriptions, and choose Hello Phase. Plus stays active until the end of the period you paid for, and deleting the app does not cancel it.

Yes, you can log the symptoms that often come with PMS and PMDD every day, including anxiety, sadness, irritability, mood swings, fatigue, brain fog, food cravings, bloating, breast tenderness, cramps and headaches, along with one of eight moods. The app looks for symptoms that keep showing up in the same part of your cycle, such as the last five days before your period. Symptoms are marked as present or not present with no severity scale, and Hello Phase does not diagnose PMDD, so please take your logs to a doctor if your symptoms feel severe.

Yes, anyone can export every logged day from Settings as a CSV file with the date, period, flow, mood, symptoms and note, or as a one-page PDF summary of cycles and averages. With Plus you can also share a doctor report PDF with your cycle table, your symptoms grouped by phase and your notes.

Yes, when your cycles vary, predictions show a likely range of dates that widens or narrows with how much your recent cycles have varied, and the app tells you how many cycles it has learned from. If pregnancy, giving birth or something else changes your cycle, you can pause predictions in Settings under Something changed.

It learns from the period start dates you log on your phone. Each new cycle counts a little more than older ones, and after every period the app shows how close its forecast was.

It is estimated from your own cycle, not measured. Hello Phase places ovulation about 14 days before your next expected period and draws typical estrogen and progesterone curves for a cycle of your length, with a marker for today. No test strips or lab results are involved, so the chart shows a typical pattern for your cycle rather than your actual hormone levels.

Yes, each phase has a guide with movement tips and foods for that phase, for example walking and gentle yoga during your period and the hardest workouts of the month around ovulation. The full food and movement sections are part of Plus, and free users see the phase intro and what is happening hormonally.

No, there is no sign up and no login, and your periods, check-ins, notes and patterns are stored on your phone and never uploaded to us. Because there is no cloud copy, export a file before you change phones.

No, we do not sell data or share it with data brokers, and the Data safety section on Google Play states that the app shares no data with third parties. The Privacy Policy lists the few service providers that help us run the coach and the Hello Phase website.

No, there are no ads, no ad tracking and no third-party trackers in the app, on the free plan or on Plus.

The coach answers questions about your cycle and writes a weekly note, using Claude, an AI model from Anthropic. Only after you agree on a consent screen, each request sends your question, your cycle day and phase, your moods and symptoms from the last seven days, your birth year if you added it and a random code for your phone, and it never sends your name, email, full dates or location. Free users get three questions a week, Plus has a fair-use limit of 40 a day, and you can turn coach data sharing off in Settings whenever you like.

Open Settings, Data, Delete all data, and every entry on your phone is wiped at once. Uninstalling the app does the same, and the few records on our server are tied only to a random code and clear themselves on a fixed schedule.

No, Hello Phase is not a contraceptive and it does not diagnose medical conditions, because it is made for tracking and learning about your cycle. The fertile window it shows is an estimate counted back from your next expected period, so please do not rely on it to prevent or plan a pregnancy.

Hello Phase is in English only for now.