The 6 best period and ovulation tracker apps

Trying to get pregnant? Trying to avoid pregnancy? Just trying to predict your next period? Whatever your plans for the future are at this very moment, there's an app for that! In fact, the fertility app space has never been, err, more fertile.
Obviously no app can replace your doctor, but keeping track of your fertility cues on your phone can certainly help keep you on top of your family planning.

Check out these 10 period and ovulation trackers that could help you get pregnant or avoid it altogether.

Flo

What it does: Flo gives predictions about your ovulation and fertile days based on your cycle data (all the information you enter into the app, including past periods and symptoms). Fertile days are marked in blue color. The day that is inside a blue dotted circle is your ovulation day – and it says “high chance of getting pregnant”. Days before ovulation and a couple of days after are those with “a chance to get pregnant” (the app considers various parameters – such as the ability of sperm to live for up to 5 days in a woman’s body, the ability of your egg to live for one day – and it tries to keep the fertile window as wide as possible to include all possibilities). The days that are black (after the ovulation and before the next period) have a low chance of pregnancy.

Cost: Free

What makes it different: Flo is the first period tracker to use artificial intelligence for the most accurate cycle predictions. The app calculates the probability of ovulation based on algorithms. The more cycle data you enter, the more accurate predictions the app will give you. For better results, you can track your basal body temperature, cervical mucus and log ovulation test results to pinpoint ovulation. What I like about this app is that once you get pregnant, it converts into a pregnancy app.

**Side note, I used this to track my fertility and was pregnant months after.

Ovia Fertility

What it does: Ovia incorporates multiple fertility and key health indicators, like eating and sleeping habits, to predict ovulation and claims it can get users pregnant up to 3 times faster than the national average. Just ask its Harvard-educated CEO, who developed the app's proprietary algorithms to help him and his wife conceive.

Cost: Free. Users can purchase a 99¢ upgrade, which includes personalized articles and extras, custom themes, and the ability to export data to Excel.

What makes it different: The company says its algorithm is based on data collected from millions of women who are pregnant or trying to conceive, which it says is "the largest data set that's ever been collected on this population."

You can log your symptoms, temperature, blood pressure, moods, and general health info for clear-cut calculations of your next fertile window. Plus, this apps allows for data sharing and syncing between you and your partner, so you're always on the same page as you try to conceive.

Fertility Friend

What it does: Hopeful moms-to-be observe and record fertility signs, which Fertility Friend uses to predict the best days for baby-making or taking a pregnancy test.

Cost: The basic app is free, but a $45-a-year premium membership gives you VIP access to message boards and advanced features like an intercourse timing analyzer and detailed analysis of your fertility signals, including those that may point to a potential pregnancy.

What makes it different: With 15-plus years of experience and 650,000 pregnancies and counting, Fertility Friend pioneered the concept of online fertility charting.

Natural Cycles

What it does: Employing bio-statistical algorithm, Natural Cycles uses women's unique temperature readings to determine when she has ovulated and when she is likely to ovulate in her next cycle, pinpointing when a women can and can't get pregnant, with 99.9% accuracy.

Cost: Free for the first month, monthly and yearly subscriptions available from $6.90 per month.

What makes it different: According to the company, this is the world's only birth control app that uses analytics instead of chemicals to plan (or prevent) pregnancies.

Conceivable

What it does: Created by a fertility wellness expert, Conceivable looks at underlying factors that can affect your fertility.

Cost: $199 a month

What makes it different: Users get much more than a fertility tracker: they receive 3 herbal formulas each month, which, according to the company's website, are "focused on removing specific obstacles to your natural fertility," such as irregular ovulation, painful periods, and weak menstrual cycles.

Period Tracker

What it does: Period Tracker takes the guess work out of when to expect a visit from your monthly friend and makes it easier to figure out when you are most fertile using simple data entry and charting.

Cost: $1.99 to download from iTunes

What makes it different: A nifty feature exports your period dates and notes to email for doctor visits.