和時計 - Wadokei
Utilities
$0.49 · Designed for iPhone
Please note: This app is currently available in Japanese only.
Wadokei is an app for reading the “koku” of Japan’s Edo-period temporal hour system, adjusted to your current location and the season.
Because day and night are each divided into six parts, a daytime koku is longer in summer, while a nighttime koku is longer in winter. Enjoy a sense of time shaped by the sun and daily life, unlike the modern 24-hour clock, through a dial inspired by traditional Japanese perpetual clocks.
Main Features:
- Shows the current koku using the zodiac sign and traditional bell name
- Calculates the length of day and night based on Akemutsu and Kuremutsu
- Supports location presets in Japan and around the world
- Calculates koku using your current location
- Shows moon age, the 24 solar terms, and the sexagenary cycle
- Supports Apple Watch, complications, and Smart Stack
- Lets you schedule notifications for twilight times
Location information is used only when you select your current location, and only to calculate koku on your device. Precise latitude and longitude are not shown in settings or screenshots, and are never sent externally.
Time that stretches and contracts with the seasons is something a modern clock alone cannot reveal. Look up at today’s sky, and let it overlap with the hours of Edo.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Searchable city selection from countries around the world
- Automatic selection of the nearest available city based on your current location
- Selected-location syncing with widgets and Apple Watch
- Improved day/night detection around dawn and dusk, with more accurate dial indicators
The developer, Daichi Sasaki, 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
- Daichi Sasaki
- Size
- 245.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 dchssk
