暦 Reki - Japanese Era Calendar
Wareki&Western Date Converter
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Now with the lunar calendar, moon phase, and lucky days (Tenshabi, Ichiryu-manbai-bi). Ask Siri for today's Japanese era date, or scan documents with camera.
「暦 Reki」is a simple and elegant app for converting between Japanese era dates (wareki) and the Western calendar.
【Features】
■ Today's Calendar
· Today's Japanese era date displayed prominently
· Rokuyou (traditional fortune calendar: Taian, Butsumetsu, etc.) with explanations
· Eto (Japanese zodiac) with emoji and name
· Current solar term and days until the next
· Lunar (old) calendar date shown alongside the Western date
· Moon phase with illumination % and moon age
· Lucky day banner for Tenshabi and Ichiryu-manbai-bi
· Countdown to year-end and next Japanese public holiday
· Year progress bar
■ Date Conversion & Lucky Day Lookup
· Instantly convert wareki ↔ Western dates
· Quick-input buttons for era names (Reiwa, Heisei, Showa, Taisho, Meiji)
· Camera OCR to scan era dates from documents (on-device processing)
· Voice input for hands-free date entry
· Conversion history saved automatically
· Look up the rokuyou and lucky-day status for any date — handy for picking a date for a wedding or move
■ Birth Year Lookup
· Enter a birth year to see the corresponding era, zodiac sign, and age
■ Siri Shortcuts
· Just ask "What's today's era date in Reki"
· Shortcuts for date conversion and deep links to each screen
■ Widgets
· Home screen widget showing today's Japanese era date, with a minimal "big number" style option
· Lock screen widget support, including a moon phase progress ring
■ Apple Watch
· View today's wareki, rokuyou, eto, and solar term on your Apple Watch
· Watch face complications (circular, rectangular, inline)
· Customizable theme colors
【Privacy】
Camera and microphone processing is done entirely on-device. No personal data collected, no ads, no third-party SDKs.
【Languages】
日本語 · English · 简体中文 · 繁體中文 · 한국어
Covers all modern Japanese eras: Reiwa (令和), Heisei (平成), Showa (昭和), Taisho (大正), and Meiji (明治).
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
· Added Siri Shortcuts support — just ask "What's today's era date in Reki."
· The Today screen can now show the lunar (old) calendar date alongside the Western date.
· Added moon phase display, showing illumination % and moon age; the lock screen widget shows it as a progress ring.
· Added lucky day info: Tenshabi and Ichiryu-manbai-bi, shown as a banner on Today when they occur.
· The Lookup screen can now check the rokuyou and lucky-day status for any date — handy for picking a date for a wedding or move.
· Added a minimal "big number" widget style option.
· Fixed some widgets showing English names in the widget gallery regardless of your language setting.
The developer, TOMONARI NATSUKAWA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- TOMONARI NATSUKAWA
- Size
- 7.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 4 more
- English, Japanese, Korean, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Support Developer – L $4.99
- Support Developer – M $2.99
- Support Developer – S $0.99
- Copyright
- © natsukawa.tn