Old Japanese Clock

Life with Various Hour Systems

$3.99 · Designed for iPad. Not verified for macOS.

This app serves as a time converter between the current hour system and old Japanese hour systems. It offers two options: a fixed hour system and a temporal hour system. The fixed hour system includes six different types: Engishiki, Guchureki, Semmyoreki, Semi-Engishiki, Kanagoyomi, and Shichiyoreki. These systems were primarily used from the Nara era through to the Edo era (c. 710–1872). On the other hand, the temporal hour system encompasses seven types: Temporeki, Koten, Shaku-Sun-Bu (Class 1 and 2), and Three-Divided (Class 1 to 3). These were predominantly used during the late Edo era (1844–1872). This app proves invaluable when reading Japanese historical documents, adjusting Japanese clocks (Wadokei), or recreating the lifestyle of ninjas and samurais, among other apps. For more detailed information, please visit the developer's website. ■ Exemption from Liability ASTI shall not be held responsible for any consequences arising from the use of this app. We disclaim all liability for any potential damages, injuries, or losses resulting from app usage.

  • 5.0
    out of 5
    1 Ratings

- Fixed bugs.

The developer, Takafumi AMANO, 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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Takafumi AMANO
    Size
    • 9.3 MB
    Category
    • Lifestyle
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English and Japanese
    Age Rating
    4+
    Copyright
    • © 2014–2025 ASTI