This app is a geospatial information database that contains records of islands under the RIDA, the PDOI, the PDAI, and the PDO in Japan. The attribute information of an island is island name, kana name, English name, location, area, coast length, population, area inhabited, islands name, applied act, designated area name, basis for only territorial waters, basis for EEZ, manned border island, specific manned border island, manned border islands area name, included nature park, natural monument, access, and note.

Please use the app for reference when buying a standard version, Japanese Islands.

■ Approved by GSI

This map is a reproduction of the Digital Map 25000 (Geographical Names & Public Facilities) published by the Geospatial Information Authority of Japan (Approval Number JO-FUKU No.604 2014)

■ Exemption from Liability

ASTI will not be held liable for anything that transpires as a result of using this app. No liability whatever will be accepted for any damage, injury or loss that may be suffered as a result of using the app.

What’s New

Version 1.5.2

- Optimized image files.

App Privacy

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 Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

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


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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