Femometer Fertility Tracker, Ovulation & Period Calendar is 100% free! It’s a smart and simple female period tracker, helpful pregnancy week by week app, accurate ovulation calendar, fertility calculator, cycle tracker, ovulation predictor and PMS symptoms tracker for women. Based on fertility awareness method(FAM), Femometer is a great tool for natural family planning(NFP). People who are trying to conceive(TTC), trying to avoid pregnancy(TTA) or trying to track period(TTT) can use Femometer without any side effects. Femometer Fertility Tracker not only accurately tracks your period and flow intensity, but it’s also a reliable pregnancy calculator, ovulation calendar, and true fertility friend for you. Femometer period diary makes accurate predictions of menstruation, ovulation and fertile days. It’s the first free period tracking app, pregnancy calculator, fertility calendar, ovulation calendar for womеn that uses machine learning (AI) algorithms. All women, even those with irregular period, can rely on this health tracker. Log your menstruation days & flow intensity in a handy period calendar (menstrual cycle diary), ovulation tracker and fertility calculator, schedule menstrual cycle reminders, record moods and PMS symptoms, use a due date calculator, follow a pregnancy calendar and take full control of your health.

- Track your cycle, period days and PMS with Femometer period calendar
- Log the start and the end date of menstruation, flow intensity and fertile days in the period calendar
- Track your fertility window (fertile days), and when do you ovulate to see your chance to get pregnant with the ovulation predictor
- Follow days favorable for conception in the fertility calendar
- Analyze your current and past cycles, menstrual flow with the menstrual tracker
- Get predictions for upcoming periods, ovulation days, and fertility with the period calendar
- Log ovulation tests(LH) results (positive ovulation, negative ovulation)
- Track basal body temperature(BBT) with the period calendar
- Log pregnancy tests(HCG & PDG) results
- Log more symptoms to get improved period predictions if you have irregular periods
- Log cervical mucus and cervix position to get more accurate ovulation prediction results

- Schedule your prenatal checkup and log doctor’s advice easily
- See countdown to the birth of the baby
- Track the week of pregnancy
- Pick and change your pregnancy week by week
- Get interesting articles on pregnancy every day

- Add your weight, daily sleep duration, water consumption every day
- Log your physical activity every day
- Import of your data from Fitbit, Google Fit, the Apple Health App
- Track your sex drive and moods every day
- Log your PMS symptoms in the period calendar

- Schedule reminders and get notifications of your period, ovulation days and fertility
- Get reminders to log weight, sleep and to drink water every day
- Get reminders on medication and contraception depending on your contraception type

- Keep your period, menstrual flow, ovulation, fertility and symptoms history
- Analyze your cycle and period duration with the menstrual cycle diary
- See the graph of your BBT and ovulation days
- Analyze your weight changes and activity during the cycle with the menstrual cycle diary
- Track your sleep duration and sleep debt every day

- Find out more about your body, cycle, ovulation, fertility and menstrual flow
- Get daily health insights
- Get support from the amazing Femometer Fertility Tracker community

Femometer has integrated with the Health App, and you can sync your basal body temperature and menstruation data to it(requires iOS 8).

Contact Femometer:
Web -
Facebook -

What's New

Version 2.7.2

- Bug fixes
- Optimized user experience

Ratings and Reviews

4.7 out of 5

253 Ratings

253 Ratings

Poor data recording ability


This thermometer seems absolutely great right out of the box, but there have definitely been a few days where the thermometer beeps "3 times" like it should after it's recorded your temperature, but then it doesn't upload to the app. I'be had 3 days now where I've taken my temperature, heard the "3 beeps" and then gotten out of bed and did my morning routine. After my routine I would go back to my phone to upload my temperature, and the data would look like it would start to update but then wouldn't never record. Super annoying considering how much more expensive this version was than other standard BBT thermometers out there! Definitely won't recommend the thermometer or app to those trying to conceive.

Developer Response

Hi, Really sorry for this issue. If you have any questions about our product, please contact, we'll try best to help you.

Weird calendar issue


I am very grateful to the developer for fixing the issues with voiceover. However, I’m still having weird issues with my calendar. When I sign into the app on my home screen for instance, it says I’m on cycle day 21. Then when I open my daily analysis or if I go to my analysis history, it says I’m on cycle day 22! Something isn’t syncing correctly, because even when I start a new period, I am on cycle day 1 according to the home screen, but on my analysis I’m already on cycle day 2. Periods do not start on cycle day 2! Fix the inaccuracy please.

Developer Response

Hi, Thanks for your feedback. We'll improve the voiceover experience of this App in the near future. Please keep your App up to date.

One complaint


I’ve only been using this app for a few days. So far I really like it actually. It takes the hassle out of charting which for me makes charting tolerable instead of stressful. Definitely worth the extra expense for the thermometer. But I’ve only given it 3 stars because there is one bug that I can’t seem to figure out. There’s a place on the chart toward the bottom for cramps, but I cannot find anywhere in the app to actually log cramps. I feel like it should be in “symptoms” but there’s no place for it. Please fix this! And then I would rate 5 stars.

Developer Response

Hi, thanks for your feedback. You need to mark the day which you want to record cramps as period day. Go to Calendar, select the day you want to record, if it is not period day, switch "First Day of Your Period" on, then you should see "Period Details", click to expand it, you'll see "Cramps" under it. Please feel free to contact us (Email: if you have any further question.


Hangzhou Bangtang Network Technology Co., Ltd
120.4 MB
Health & Fitness
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German, Italian, Simplified Chinese, Spanish, Turkish
Age Rating
Rated 12+ for the following:
Infrequent/Mild Medical/Treatment Information
© 2017 Hangzhou Bangtang Network Technology Co., Ltd


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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