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Dot - A Period & Fertility Tracker

By Cycle Technologies

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Dot™ is the only period tracker that can be used to effectively prevent pregnancy or plan pregnancy based on your unique cycle lengths. Based on a new family planning method called Dynamic Optimal Timing™, this patent pending approach enables you to plan or prevent pregnancy easily and effectively by simply tracking your period start dates. It tells you your individual conception risks for each day of your cycle.

Dot has been described by global health experts as a "game changer for women's health", named by Women Deliver as one of "the top 10 apps improving the lives of women & girls", and described by BuzzFeed as a fertility app that is "life changing."

Dot uses a sophisticated algorithm and compares your data to large-scale data sets to calculate your conception risk or chances for each day of your cycle using just your period start dates. It shows you instantly if you are at low, medium or high risk for pregnancy. The best part - the more you use Dot, the more Dot gets to know you and can tailor your information.

Dynamic Optimal Timing is a modern, easy to use natural family planning method developed by leading reproductive health experts and data scientists. Scientific research shows that it is highly accurate and effective.

While many period tracking apps are focused on helping a woman get pregnant, they aren’t able to help a woman effectively prevent pregnancy. Dot uses a patent-pending approach based on extensive data analysis. It is the only period tracking app based on your unique cycle history that can be used as birth control as well as to get pregnant. And because it’s so brilliantly simple, no complex charting, additional hardware or subscriptions are needed to effectively use Dot.

Dot can be used to prevent pregnancy, get pregnant faster, or to simply track your periods and understand your conception risks. For pregnancy prevention, Dot may not be appropriate for you if you have significant variation in your cycle lengths (more than 10 days between your shortest and longest cycles) or if you have cycles that are regularly shorter than 20 days or longer than 40 days long.

Dot is multi-talented. Whether you want to conceive, use it as contraception, or just track your cycles, Dot has you covered. No other period tracking app can say that.

Smart Data – Dot lets you instantly know your conception risks or chances each day of your cycle using just your period start dates. It also tells you if this means you are on a High, Medium or Low risk day for pregnancy.

Intuitive Interface – Dot displays all of this information with a beautiful, easy to use interface that features changing color-coded backgrounds, symbols and text so that you know exactly what to do.

Period Prediction – Dot gives you accurate period predictions for the next 6 months.

Cycle History – Dot keeps your cycle history so you can see your period start dates and cycle lengths.

When you upgrade to Dot Pro, you are helping the millions of women around the world who have an unmet need for contraception. We are committed to providing these women with free, effective family planning options that don’t cause side effects. Upgrading to Dot Pro supports this work. Upgrading also gives you a few nifty features!

Export & Save Your Cycle Data - Send your cycle data to your iPhone’s calendar app and email it to yourself or your doctor.

Notes, Symptoms & Mood Tracking – Add notes to calendar dates and track your period symptoms, mood, and frequency of sex.

Keep Your Partner in the Loop – Send your partner texts or emails to keep them up to date on your status.

Change Dot’s Colors – Choose from several skins to customize Dot’s colors.

Questions? Email us at

Dot is a brilliantly simple health innovation from Cycle Technologies. Dot is also a patent-pending technology.

What's New in Version 1.2.8

- Squashed the end date entry bug.

iPhone Screenshots

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Dot - A Period & Fertility Tracker
View in iTunes
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 1.2.8
  • Size: 42.2 MB
  • Language: English
  • Developer:
Rated 12+ for the following:
  • Infrequent/Mild Medical/Treatment Information

Compatibility: Requires iOS 8.3 or later. Compatible with iPhone, iPad, and iPod touch.

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Top In-App Purchases

  1. Dot Pro£2.99