Simpluna: Period Cycle Tracker
Simpluna: 생리주기어플과 생리달력
Simpluna: Period Cycle Tracker is #86 in Health & Fitness Free in South Korea and charting in 1 of 16 countries we track.
DeveloperOmoidasu, Inc.
CategoryHealth & Fitness
PriceFree
Released
Rating★ 4.7 (2.9k)
Version4.7.2
Age rating12+
First charted🇰🇷 24 Sep 2026
Where it ranks now
Every top chart it appears in across 16 countries.
| Country | Chart | Rank |
|---|---|---|
| 🇰🇷 South Korea | Health & Fitness · Free | #86 |
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Sign inEstimated downloads and revenue, ratings momentum, rank history, recent reviews per country and breakout scores for Simpluna: Period Cycle Tracker.
About Simpluna: Period Cycle Tracker
Track your period with a simple, ad-free calendar.
Record start and end dates, review past periods, and see your next predicted date at a glance.
No account is needed for everyday tracking. Your records stay on your device unless you choose to use optional cloud backup or data sharing.
Simpluna Plus adds more ways to track and personalize your calendar with a one-time purchase. No subscription.
Open the calendar, tap the start or end date, and your next predicted period is shown on the calendar.
Predictions shown in the app are estimates based on your records.
They are not intended for medical diagnosis or treatment, or for decisions about contraception or pregnancy.
No articles, AI chat, or forums — just your records and predictions.
Over 600,000 downloads!
—————— Features ——————
Simpluna is an app for recording and predicting your period days.
When you launch the app, a calendar appears so you can check your next predicted period and past periods at a glance. By cutting unnecessary features and keeping things as simple as possible, we make sure the app does not get in the way of your daily life.
▶ Easy recording
To record your period, just tap a date on the calendar and press the start or end button. It is intuitive, so there is nothing new to learn.
▶ Notes on each day
If there is anything you want to keep track of, such as how you feel or your physical condition, you can leave it as a note.
▶ Notification before the predicted date
You can receive a notification as your next predicted period approaches. You can specify how many days in advance and at what time you want to be notified.
▶ Register up to 1 year of past data
If you have past period records, you can register them. The available range goes back up to 1 year from when you started using the app. (With Simpluna Plus, you can register up to 10 years.)
▶ Forecast calendar up to 1 year ahead
The forecast calendar lets you look up to 1 year into the future. You can also save future plans as notes and view them together with the predictions.
▶ List of past periods
You can review your past periods as a list.
▶ App lock
You can lock the app with a 4-digit passcode if you do not want others to see it. Face ID is also supported.
▶ Dark mode support
The UI colors automatically switch to match light or dark mode.
▶ Works offline
You can keep using the app even when offline or with a poor signal.
—————— Simpluna Plus (Paid: one-time purchase) ——————
▶ Color themes
16 colors are available.
▶ Ovulation tracking
Predict and manage ovulation, including the window around it.
▶ PMS period display
The PMS period is shown as an underline on the calendar. You can change the number of days for the period.
▶ Pause
Pause predictions during pregnancy, treatment, or other times.
▶ Prediction summary
Show your current cycle day, next period, and ovulation prediction on the home screen.
▶ Customizable input fields
Add custom fields such as symptoms, flow, temperature, or medication.
▶ Cu
Record start and end dates, review past periods, and see your next predicted date at a glance.
No account is needed for everyday tracking. Your records stay on your device unless you choose to use optional cloud backup or data sharing.
Simpluna Plus adds more ways to track and personalize your calendar with a one-time purchase. No subscription.
Open the calendar, tap the start or end date, and your next predicted period is shown on the calendar.
Predictions shown in the app are estimates based on your records.
They are not intended for medical diagnosis or treatment, or for decisions about contraception or pregnancy.
No articles, AI chat, or forums — just your records and predictions.
Over 600,000 downloads!
—————— Features ——————
Simpluna is an app for recording and predicting your period days.
When you launch the app, a calendar appears so you can check your next predicted period and past periods at a glance. By cutting unnecessary features and keeping things as simple as possible, we make sure the app does not get in the way of your daily life.
▶ Easy recording
To record your period, just tap a date on the calendar and press the start or end button. It is intuitive, so there is nothing new to learn.
▶ Notes on each day
If there is anything you want to keep track of, such as how you feel or your physical condition, you can leave it as a note.
▶ Notification before the predicted date
You can receive a notification as your next predicted period approaches. You can specify how many days in advance and at what time you want to be notified.
▶ Register up to 1 year of past data
If you have past period records, you can register them. The available range goes back up to 1 year from when you started using the app. (With Simpluna Plus, you can register up to 10 years.)
▶ Forecast calendar up to 1 year ahead
The forecast calendar lets you look up to 1 year into the future. You can also save future plans as notes and view them together with the predictions.
▶ List of past periods
You can review your past periods as a list.
▶ App lock
You can lock the app with a 4-digit passcode if you do not want others to see it. Face ID is also supported.
▶ Dark mode support
The UI colors automatically switch to match light or dark mode.
▶ Works offline
You can keep using the app even when offline or with a poor signal.
—————— Simpluna Plus (Paid: one-time purchase) ——————
▶ Color themes
16 colors are available.
▶ Ovulation tracking
Predict and manage ovulation, including the window around it.
▶ PMS period display
The PMS period is shown as an underline on the calendar. You can change the number of days for the period.
▶ Pause
Pause predictions during pregnancy, treatment, or other times.
▶ Prediction summary
Show your current cycle day, next period, and ovulation prediction on the home screen.
▶ Customizable input fields
Add custom fields such as symptoms, flow, temperature, or medication.
▶ Cu
Latest updates
4.7.2