# Hana - Period Calendar — Ovulation & Fertile Window

> Ovulation & Fertile Window (iPhone/iPad app by Na Eun Lee.)

- Source: https://appshunter.io/ios/app/hana-period-calendar/id6759871227 (this page in markdown: same URL + `.md`)
- Developer: [Na Eun Lee](https://appshunter.io/developer/1881350794)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 1 MB
- Languages: American English, Japanese, Korean
- Released: 2026-03-03
- Data updated: 2026-05-15
- User reviews in markdown: https://appshunter.io/ios/app/hana-period-calendar/id6759871227/reviews.md

## What is Hana?

Hana is a simple, beautiful period calendar designed just for you.

[Key Features]
- View your period, ovulation, and fertile window at a glance on the monthly calendar
- Automatically sync data from Apple Health app
- Personalized ovulation & fertile window prediction (weighted by recent cycles)
- Log your daily condition with notes (up to 300 chars) and color icons
- Visualize cycle trends with statistics and graphs
- Search through your diary entries
- Export & restore data with JSON backup
- Push notifications 3 days and 1 day before your expected period
- Switch between Korean and English

[Your Privacy First]
All data is stored only on your iPhone. Nothing is sent to any server or shared externally.

[Apple Health Integration]
Hana reads menstrual data from Apple Health to automatically calculate your cycle. Data entered in Hana is not written back to Apple Health.


## Version history (last 3 releases)

### 1.2 — 2026-03-19

Fixed an issue where predicted period dates were not shown on the calendar.

### 1.1 — 2026-03-10

・Japanese language support added
・Change diary entry date
・Write new diary entries
・All / Memo only filter
・Diary statistics screen

### 1.0 — 2026-03-03

No release notes.

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*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 2026-05-15.*