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 t... - More info on Old Japanese Clock...

This app is a Temporeki clock. The Temporeki is a temporal hour system that was primarily used in 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 This app proves invaluable when reading Japanese historical documents, adjusting Japanese clocks (Wadokei), or recreating the lifestyle of ninjas and samurais, among other apps.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 Li... - More info on Old Japanese Clock L...

This app serves as an alarm that provides notifications at dawn, sunrise, sunset, and dusk. If you wish to commence activities shortly after sunrise, this app is an excellent choice. It offers the capability to determine the timing of sunrise, sunset, dawn, and dusk for your current location and major cities instantly. Moreover, you can access this information even if you haven’t allowed local n... - More info on Dawn Alarm...

This app displays aerial photographs of Japan from 1928 to the present. If you wish to explore historical Japan, this app is highly suitable. It's the lite version of the “Disaster Place Names of Japan” app. ■ Liability Disclaimer ASTI disclaims all liability for any consequences arising from the use of the app. We accept no responsibility for any damages, injuries, or losses resulting f... - More info on Aerial Photographs o...

This app contains information on approximately 6,000 islands in Japan. Island attribute information includes the island's name, kana name, English name, location, area, coast length, population, whether it's populated, island grouping name, applicable act, designated area name, basis for territorial sea only, basis for EEZ (Exclusive Economic Zone), populated remote territorial island (RTI) area, ... - More info on Japanese Islands...

You can learn the prefectural capitals in Japan with this app. A quiz will consist of 10 questions. To answer correctly, tap the location of the displayed capital name on the map. Utilize the compass to find the correct answer quickly. Confirm the correct answer location by using “Prefectural Capitals.” The quiz is considered clear when you achieve a score of 10,000 points or more. Note that t... - More info on Prefectural Capitals...

This app is a simple interval timer. If you want to use the Pomodoro Technique or Tabata Training, the app can fulfill your needs. - More info on Concentration Timer...

This app serves as a straightforward voice clock. It utilizes local notifications to announce the time, even when music is playing or when the app is running in the background. This feature is especially handy when you can’t readily view your iPhone screen. The voice is accessible in three languages: English, Italian, and Japanese. For further details, please refer to the “App Information” ... - More info on Voice Over Clock...