Diamond X app for iPhone and iPad

You can easily find the date and time of Diamond Fuji.
Since GPS and Web maps can be used, diamonds from any location are OK.
Diamonds other than Mt. Fuji are also OK.
Data on more than 1200 mountains all over Japan, Tokyo Metropolitan Government Building, Tokyo Tower, Tokyo Sky Tree, etc. are built-in.
As with "Yamaotaku for Mac (Yamac)", the curvature of the earth and atmospheric refraction are taken into consideration, and highly accurate results can be obtained.
It supports Japanese and English display and automatically switches according to the setting of the language used on the iPhone.
You can share location data files with your Mac or Windows.