Используйте приложение APKPure
Историческую версию Point Search Free (Search Lat/ lon) можно получить на Android
Это приложение поможет определить значение долготы / широты пункта назначения с помощью смартфона GPS.
This application has a function to guide to a point by specifying one point,
There is a function to specify 2 points (start point and end point) and guide it to the line.
The paid version application has the following functions.
This app has a function to convert UTM coordinate value to longitude / latitude and load it in CSV file. and function to convert longitude / latitude value to UTM coordinate and save it in CSV file.
When saving, you can select WGB 84 series which are used internationally, coordinate system in Japan.
When converting and saving, the original latitude and longitude coordinates and the ellipsoid and zone number at the time of conversion are also saved in the CSV file.
* It depends on the accuracy of the GPS mounted on the smartphone, so there is an error of m unit depending on the accuracy of the GPS installed.
About CSV file format
In case of longitude / latitude notation
Station name, latitude, longitude,
It is a CSV file written in the above order.
In the case of plane rectangular coordinates,
Station name, vertical axis coordinate, horizontal axis coordinate,
It is a CSV file written in the above order.