Bom Calendar - Period tracker
봄 캘린더 - 생리, 피임, 임신 준비
Bom Calendar - Period tracker is #75 in Health & Fitness Grossing in South Korea and charting in 1 of 24 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
Developerbomcomes Corp.
CategoryHealth & Fitness
PriceFree
Released
Rating★ 4.4 (81k)
Version2.7.2
Age rating12+
First seen by us
25 Sep 2026
Installs (est.)1M+ worldwide
Rating
4.4 ★
81k ratings
Measured
Best rank now
#75
Measured
Bom Calendar - Period tracker on the App Store
App details
App ID
1190438906
Publisher
bomcomes Corp.
Minimum OS
iOS 15.0+
Content rating
12+
Languages
3
EN JA KO
Size
128 MB
Bom Calendar - Period tracker downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Bom Calendar - Period tracker's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Bom Calendar - Period tracker makes money: subscriptions, one-off purchases and ads.
Ads · 2 ad networks
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| Health & FitnessGrossing | #75 | |
| Health & FitnessFree | #127 |
Apps near Bom Calendar - Period tracker on the chart
Health & Fitness Grossing, around #75.
Ratings
App Store, worldwide.
Rating
4.4 ★
81k ratings
Measured
Ratings
81k
Measured
About Bom Calendar - Period tracker
- Bom Calendar, a unique period tracker you can customize
Get consistent with Bom Calendar! It’s the app you will want to see daily. Ever wondered when your next period will be? What about the chances of pregnancy? How about sexual interactions? Get the answers you want at any time with Bom Calendar. Customize everything from the calendar display, color, app icon, visibility, and order – all to your preference!
- Period, Schedule, To-Do List: All in One App
Accurate period tracking starts here. Add and manage your schedule and to-do-list with just one tap. Get notifications to keep up with your schedule, lunar calendar, and holidays. Save time and make your day more efficient with Bom Calendar.
- Accurate Pregnancy Probability and Period Cycle Estimation
Did you know only 6% of period tracker apps could accurately predict periods? Bom Calendar uses the same standard contraceptive guidelines and period calculation methods used by the American Board of OBGYN for a more accurate pregnancy probability and cycle prediction.
Learn how to nurture your body. Bom Calendar tracks the female hormones that change daily to let you know what your mood is, your energy level, memory, focus, comprehension, cravings and more.
- Daily Updates About My Body condition
Let Bom Calendar help! Learn about the symptoms and causes of common illnesses for women and how to respond to them.
- My Special Doctor Keeping Up With My Health
It's easy to let your health slip with your busy day-to-day life. No more worries. With Bom Calendar, you can learn about the symptoms and causes of common illnesses for women and how to respond to them.
- Pregnancy Mode for Health Baby
Get weekly updates on the baby's size, the different changes in you and your baby and tips on what to do. Bom Calendar will support you until your baby comes.
- Easy Weight Tracking
No more complicated weight trackers! Simply enter your weight, and the app will show you the healthy weight range and BMI. Achieve your weight goals with Bom Calendar!
- Keep My Data More Securely and Conveniently
Use your email, Google or Apple accounts for an easy, fast sign-up process. We keep your user data safe on our secure server with an auto-backup/restore function even if you change your phone or reinstall our app. - Share Your Calendar with a Special Someone
- Share Your Calendar with a Special Someone
Share your calendar to securely and easily share your days. You can customize what information you want to send and when important information is updated
- Export Your Data as a PDF Report
Generate comprehensive health reports based on your recorded data. Export your body's changes—including periods, medication, mood, and symptoms—into a professional PDF to share with your doctor or keep for your records. Even complex logs are neatly organized into a single, easy-to-read report.
[Premium]
- Share mood and health status with friends.
- Export menstrual cycles and basal body temperature as a PDF.
- Enjoy an ad-free
Get consistent with Bom Calendar! It’s the app you will want to see daily. Ever wondered when your next period will be? What about the chances of pregnancy? How about sexual interactions? Get the answers you want at any time with Bom Calendar. Customize everything from the calendar display, color, app icon, visibility, and order – all to your preference!
- Period, Schedule, To-Do List: All in One App
Accurate period tracking starts here. Add and manage your schedule and to-do-list with just one tap. Get notifications to keep up with your schedule, lunar calendar, and holidays. Save time and make your day more efficient with Bom Calendar.
- Accurate Pregnancy Probability and Period Cycle Estimation
Did you know only 6% of period tracker apps could accurately predict periods? Bom Calendar uses the same standard contraceptive guidelines and period calculation methods used by the American Board of OBGYN for a more accurate pregnancy probability and cycle prediction.
Learn how to nurture your body. Bom Calendar tracks the female hormones that change daily to let you know what your mood is, your energy level, memory, focus, comprehension, cravings and more.
- Daily Updates About My Body condition
Let Bom Calendar help! Learn about the symptoms and causes of common illnesses for women and how to respond to them.
- My Special Doctor Keeping Up With My Health
It's easy to let your health slip with your busy day-to-day life. No more worries. With Bom Calendar, you can learn about the symptoms and causes of common illnesses for women and how to respond to them.
- Pregnancy Mode for Health Baby
Get weekly updates on the baby's size, the different changes in you and your baby and tips on what to do. Bom Calendar will support you until your baby comes.
- Easy Weight Tracking
No more complicated weight trackers! Simply enter your weight, and the app will show you the healthy weight range and BMI. Achieve your weight goals with Bom Calendar!
- Keep My Data More Securely and Conveniently
Use your email, Google or Apple accounts for an easy, fast sign-up process. We keep your user data safe on our secure server with an auto-backup/restore function even if you change your phone or reinstall our app. - Share Your Calendar with a Special Someone
- Share Your Calendar with a Special Someone
Share your calendar to securely and easily share your days. You can customize what information you want to send and when important information is updated
- Export Your Data as a PDF Report
Generate comprehensive health reports based on your recorded data. Export your body's changes—including periods, medication, mood, and symptoms—into a professional PDF to share with your doctor or keep for your records. Even complex logs are neatly organized into a single, easy-to-read report.
[Premium]
- Share mood and health status with friends.
- Export menstrual cycles and basal body temperature as a PDF.
- Enjoy an ad-free
Latest updates
2.7.2
- Fixed an issue where recorded periods did not appear in the calendar during pregnancy.
- Improved app stability and usability.