Period tracking, perfected
Accurate, data-focused, customizable, and private. Introducing the world's most advanced health & period tracking app for iOS. With over 15 beautiful health categories to choose from, tracking your cycle, and your life, is now better than ever.
Amazingly accurate period and fertility predictions
One's Period AI™ identifies patterns to give you the most reliable cycle predictions. The more you use the app, the more accurate the app becomes. Feel more confident everyday knowing exactly when your future period and fertility days occur.
Logging current and past periods is easy
No one looks forward to their periods but logging them has never been easier. Simply tap your period start date and One will handle the rest.
Remember important details about your cycle
Having irregular or heavy periods may indicate an underlying condition. Have this information at your fingertips when speaking with your healthcare provider. You can even customize the period category, or any category, by adding new groups and tags and track the information that's important to you.
Monitor mood patterns and identify negative influences
A mood diary can help you to find the small things, as well as the big, that help you stay well and can show you the impact of the positive strategies that you adopt on your well-being.
Track symptoms such as cough, fever, fatigue, aches, pains, and more
Tracking your symptoms can help you and your healthcare team find ways to help you cope more effectively with your symptoms and treatment.
Be prepared for your next doctor's appointment
Quickly recall your prior visits, exams, and illnesses and write down any new diagnosis, treatment options, and medication.
Keep track of any health concerns while you're pregnant
Being pregnant means OBGYN visits. Easily log your symptoms, aches, pains, and appetite information and have it ready and available to discuss with your physician.
Choose from 15 different health tracking categories
Categories include Period, Mood, Symptom, Sex, Fertility, Weight, Activity, Medication, Food, Drink, Beauty, Sleep, Fitness, and Health, or you can create your own custom category and track what's important to you.
Create your own custom tracking category
Life is not one-size-fits-all. We believe you should have the option of tracking your life the way you want. Creating a custom category gives you the option of tracking anything. You can even personalize the category by choosing a unique color and icon.
Personalize categories with groups & tags
Groups let you create a subset of tags within a category. Tags can be created and edited within each group. Multiple groups can be created giving you endless possible tracking options within each category.
View your past entries in a beautiful and easy-to-read diary
Check out the complete history of all your entries with the diary. Each entry is timestamped, grouped, and categorized giving you an ideal summary.
View your cycle history and health with charts
Knowledge is power, especially when it comes to tracking your cycles and health. That’s why we’ve given you beautiful cycle statistics that are easy-to-read and readily available at your fingertips.