# Simpluna Period Calendar — Simple Menstrual Cycle Tracker > Simple menstrual cycle tracker and predictor with optional advanced features. (iPhone/iPad app by Omoidasu, Inc..) - Source: https://appshunter.io/ios/app/simpluna-period-calendar/id1528652349 (this page in markdown: same URL + `.md`) - Developer: [Omoidasu, Inc.](https://appshunter.io/developer/1476625101) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Rating: 4.70/5 from 255 App Store ratings · 173 written reviews indexed - Age rating: 12+ - Requires: iOS 16.4 · 93 MB - Languages: American English, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Hindi, Indonesian, Italian and 14 more - Released: 2020-08-29 - Data updated: 2026-08-29 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/simpluna-period-calendar/id1528652349/reviews.md ## What is Simpluna Period Calendar? Over 600,000 downloads! Simpluna is a simple period tracker and menstrual cycle tracker for recording period dates and checking your next period prediction. Open the period calendar, tap the start or end date, and your next 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. It is a period journal for the basics done well: no ads, no articles, no AI chat, no forums, no fluff. Your data stays on your device — no account required. Simpluna Plus is a one-time purchase, not a subscription. Track and predict your cycle. Nothing else. —————— 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. ▶ Customizable notifications You can freely change the timing and message of notifications. ▶ Pill reminder Set daily pill reminders, active periods, break periods, and the message. ▶ Widget Show your next predicted period as a home screen widget. ▶ Past data registration (up to 10 years) You can register data going back up to 10 years from the day you started using the app. ▶ Health app integration Auto-sync period dates, import from the Health app, and export. A 24-hour trial is available before purchase (you will not be charged automatically). —————— Other one-time purchases —————— ▶ Continuous cloud backup Continuous cloud backup with a one-time purchase. No monthly or annual fees. Migration and manual backups are free. ▶ Data sharing Share records and predictions with someone you choose. Includes data backup. —————— Supported OS —————— iOS 16.4 or later is required. Some older iOS versions may not be able to install future updates. ## Key features - Simple period date input and prediction - Calendar view of past and future periods - Customizable period notifications - Optional advanced features with Simpluna Plus - Passcode and Face ID app lock - Data backup and restore - Offline functionality ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Simpluna Plus | $5.99 | one-time | | Data Sharing | $3.99 | one-time | | Cloud Backup | $1.99 | one-time | | Simpluna Donation (1) | $1.99 | one-time | | Simpluna Donation (2) | $3.99 | one-time | | Simpluna Donation (3) | $8.99 | one-time | | Simpluna Donation (4) | $24.99 | one-time | | Simpluna Donation (5) | $79.99 | one-time | | HealthKit Integration | $2.99 | one-time | ## What do users think of Simpluna Period Calendar? Overall sentiment: positive **Pros** - 🚀 Simple, clear, and easy to use - 🔒 No ads or unnecessary features - 👍 Customizable, clean design - 👍 Accurate period predictions - 👍 Useful reminders and notifications **Cons** - 🐛 Occasional glitches and crashes - 🔋 Compatibility issues with newer devices **Commonly reported bugs** - Login issues after device change - Incorrect period predictions in some cases **Most requested features** - Integration with Apple Health - Ability to share data with partners - Option to add notes about sexual activity ## Recent user reviews (10 of 173) All indexed reviews: https://appshunter.io/ios/app/simpluna-period-calendar/id1528652349/reviews.md ### 5/5 — 최고의 어플 *2026-06-21* 여러가지 생리 어플 사용해봤는데 이게 최고에요 엄청 깔끔하고 필요한 기능만 있고 주기도 진짜 잘맞아요 어플 유료결제 해본거 처음인데 너무너무 잘쓰고 있어요 감사합니다🤍 ### 5/5 — 너무 조아요!! *2026-05-23* 제가 생리 주기가 제각각이고 안 하고 건너뛰는 달도 있어서 예정일은 필요없고, 그냥 기록용으로 쓰고있는데 앱이 심플하면서 예쁘고 이 아이콘? 그것도 심플하구 예뻐서 너무 잘 쓰고있어요 ㅠㅠㅠ 앱 사용한지 2년 좀 넘었는데 이렇게 꾸준히 기록하니깐 넘 편하구 메모 기능도 있어서 더 좋아요!! 그리고 생리를 언제 며칠씩 했는지 한번에 보여주는 기능도 있어서 넘 편해여👍 ### 5/5 — Simplicity and functionality! *2026-05-09, version 4.0.3* Finally, a cycle tracker that provides just what it’s ment to. No annoying ads or overwhelm features, just simple tool for tracking your cycles. Perfect! Do not change a thing! ### 5/5 — Great App *2026-05-03* After being recommended several different period tracking apps, this one is far superior for my needs. It is exactly what was looking for; simple and easy to use. I am past the point in my life that I need to track ovulation, and wanted something that would remind me my period is coming, have a calendar to show, and calculate when based on my average challenge is. As a woman that is in the beginning stages of perimenopause, my period is no longer as predictable as it once was. The three day until period starts is a such a wonderful feature with them beginning to become a little closer together. I highly recommend if you are in the same point in your life as I am, and want something straightforward to use. ### 1/5 — Deleted? *2026-04-23* I logged in and my data was gone and it told me I didn’t have an account. Now I have no historical information and need to start all over with a different app. Very frustrating **Developer response:** We’re sorry for the inconvenience. We’ll check this on our side, so please send the email address you used when logging in to Simpluna to simpluna-support@omoidasu.co.jp. ### 5/5 — 심플!!!! *2026-04-19* 진짜 엄~~~~~청 심플해요 다른 것들은 막 로그인도하고 왜하는건지도 모르는 나이인증같은것도하던데 이건 걍 엄청 심플!!! 질문도 진짜 다 필요한 것들만 묻고 너무 조흠!!!! 친구도 이거 보더니 뭐냐고 알려달라함호호 쭉 이대로만 가면 조켓네요 ### 5/5 — Best period tracker *2026-04-08, version 3.9.0* Honestly the best period tracker I have ever had. I didn’t want all the fluffy extra stuff. All I wanted to do is track my period and this app does exactly that with also giving proper period predictions as well. Super accurate and easy to use. ### 5/5 — Great!! *2026-03-20* This app is very simple and straightforward. There aren’t hundreds of ads. There also aren’t too many settings or options. The app predicts my cycle pretty well. If you are looking for an app that predicts everything, like ovulation and stuff, this isn’t it, but it’s a great app for just main menstruation. ### 5/5 — コラム系が苦手な方におすすめ *2026-02-18* 月経管理に最低限のことが揃っているシンプルなアプリですが、その最低限が私に合っていました。無料版だと周期のみが記録でき、私は症状についても管理したかったためPlusを購入しました。買い切りでありがたいです。 月経管理アプリを探していると、性的なコラムがついているものが多いです。私はそういうものが苦手なので煩わしく思っていました。 ですがSimplunaにはそういった恥ずかしくなる要素が一切ないです。コラムがないだけでなく文字が小さく（いい意味で読みづらい）、露骨に排卵を連想させるような卵のマークもなく、ホームのカレンダーだけを見ると全てが抽象的な記号で表されています。 アプリデザイン自体も月経管理アプリだとは分からないものになっており、おかげで堂々と外で体調を記録できます。 入力欄は自由にカスタマイズできるので、気になるものだけ作っておける点もありがたいです。 ### 5/5 — 드디어 찾은 생리앱 *2026-02-07* 여러 생리 관리 앱을 비교해보려고 6개 정도 설치해서 사용해봤는데, 주기 관리 기능보다 광고나 제품 홍보가 많아서 오히려 사용하기 복잡하게 느껴져 대부분 삭제했어요. 그런데 이 앱은 체험판 사용 후 바로 유료 결제를 할 만큼 만족도가 높았습니다. 화면이 깔끔하고 광고가 없어서 필요한 기능에만 집중할 수 있는 점이 특히 좋았어요. 결제도 한 번만 하면 계속 사용할 수 있는 방식이라, 매달 구독 결제를 해야 하는 다른 앱들과 비교해 부담이 적은 것도 장점이라고 느꼈습니다. 다만, 임신을 준비 중인 분들이 활용하기에는 관련 기능이 다소 부족하게 느껴질 수 있다는 점은 아쉬웠습니다. 그럼에도 단순하게 생리 주기 관리와 기본 기록 기능을 원하는 분들께는 충분히 만족스러운 앱이라고 생각합니다. ## Frequently asked questions about Simpluna Period Calendar ### What does Simpluna do? Simpluna is a simple menstrual cycle tracker that allows you to record your period dates and predicts your next period. It displays this information on a calendar, offers optional notifications, and allows you to leave notes on specific dates. The app is designed with a simplified interface to be easy to use daily. ### What are the key features of Simpluna? Key features include intuitive period date input, calendar-based prediction of future periods, the ability to record past periods, customizable notifications for upcoming periods, and an optional passcode or Face ID lock for privacy. It also supports data backup and offline functionality. ### Is Simpluna free to use? The core functionality of Simpluna, including basic period tracking and prediction, is free. However, advanced features such as ovulation day prediction, color themes, and customizable input fields require a one-time purchase of Simpluna Plus. This model is chosen to avoid ads and provide a stress-free user experience. ### What are the advanced features available with Simpluna Plus? Simpluna Plus unlocks features like ovulation day prediction and management, PMS period display, prediction summary, customizable input fields for symptoms or body temperature, custom notifications, pill reminders, widgets, and the ability to register historical data for the last 5 years. ### Can I use Simpluna offline? Yes, Simpluna functions offline or under poor internet conditions. This ensures you can track your cycle and access predictions even without an active internet connection, making it a reliable tool for daily use. ## Version history (last 5 releases) ### 4.6.0 — 2026-08-28 - Improved custom field input in Simpluna Plus, with one-tap keyword selection and multiple log entries per day - You can now set the display priority of calendar marks - Added support for iPad - Improved performance and layouts on some screens ### 4.5.6 — 2026-08-21 - Revised the default period length used during initial setup - Improved guidance for backup and restore - Refined wording in some languages and adjusted screen layouts ### 4.5.5 — 2026-08-17 - Added support for multiple pill reminders and multiple notification times - Improved the display when the expected period date has passed and improved the widgets - Improved initial setup and calendar usability - Improved wording in all supported languages ### 4.5.4 — 2026-08-11 - Updated and improved the FAQ - Improved in-app wording ### 4.5.3 — 2026-08-09 - Added an in-app wording feedback screen - Added support for Danish, Finnish, Norwegian, and Swedish - Improved calendar behavior ## Apps similar to Simpluna Period Calendar | App | Rating | Price | Category | | --- | --- | --- | --- | | [Natural Cycles: Fertility App](https://appshunter.io/ios/app/natural-cycles-fertility-app/id765535549) | 4.8 (29,811) | Free | Health & Fitness | | [Clue Period & Cycle Tracker](https://appshunter.io/ios/app/clue-period-and-cycle-tracker/id657189652) | 4.8 (402,315) | Free | Health & Fitness | | [Moody Month: Hormone Tracker](https://appshunter.io/ios/app/moody-month-hormone-tracker/id1414905792) | 4.6 (881) | Free | Health & Fitness | | [Cycles: Period & Cycle Tracker](https://appshunter.io/ios/app/cycles-period-and-cycle-tracker/id577187307) | 4.7 (26,743) | Free | Health & Fitness | | [My Cycle ؜](https://appshunter.io/ios/app/my-cycle/id1459096552) | 4.8 (92,536) | Free | Health & Fitness | | [Clover －Period Tracker, Cycle](https://appshunter.io/ios/app/clover-period-tracker-cycle/id1423628793) | 4.6 (22,773) | Free | Health & Fitness | ## More apps by Omoidasu, Inc. - [Meditation App Tadayou](https://appshunter.io/ios/app/meditation-app-tadayou/id1536249222) All apps by Omoidasu, Inc.: https://appshunter.io/developer/1476625101 ## Related topics [simpluna period calendar app](https://appshunter.io/ios/topics/simpluna-period-calendar-app) · [simple period tracker](https://appshunter.io/ios/topics/simple-period-tracker) · [initio](https://appshunter.io/ios/topics/initio) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*