Groundy / グランディ - 全国の地番検索と土地管理

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Everyone
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About this app

Groundy is a land information management platform that uses the electronic data of accurate "Registry Office Maps" (Article 14 Maps) provided by the Legal Affairs Bureau. Highly accurate maps allow you to see the exact boundaries of your land anytime, anywhere.

With Groundy, anyone can easily manage land information.

Maps can be displayed in 3D, so even beginners can intuitively check the topography and boundaries of the land without requiring any specialized knowledge.

The first step is to provide a service that can revolutionize analog work in the forestry industry.

In the future, we plan to offer a variety of services to people in the agricultural, real estate, and professional industries involved in land management.

[Features of this app]
■You can check accurate boundary lines (*1) and lot numbers anytime, anywhere.

The electronic data of the map provided by the registry office (Article 14 map) provided by the Legal Affairs Bureau is displayed on the map, allowing you to check the exact boundaries. Lot number information is displayed within the boundary area, and you can confirm the lot number within the app. Furthermore, it can be used 24 hours a day, eliminating the need for the time and expense of going to a government office to pick up a map.

■Easily search by lot number, building name, etc.

It has an easy-to-use search function that allows you to quickly find the land you are looking for in a variety of ways. When you search by entering a lot number or place name, the location of that lot number will be immediately displayed on the map. You can also search for surrounding land by landmark building name or facility name.

■Groundy Drive function (unique function of this service)

This function allows you to create and manage map lot number information as folders and files.
You will be able to link necessary information such as notes and photos to the lot number information and maps you have created, allowing you to easily manage them.

■A function that automatically generates the required number of seedlings and planting location (patent pending)

Reforestation points can be automatically generated for each lot number.
The number of seedlings is calculated from the number of points automatically calculated for each 2m radius of the seedlings, and you can know in advance the number of seedlings you need. Furthermore, since each tree-planting point has latitude and longitude information, it is possible to pinpoint the location of the tree-planted area when planting seedlings or mowing the underbrush.

*1: Conforms to electronic data of boundary lines drawn using high-precision surveying technology based on the tolerance values ​​(tolerances) stipulated by the National Land Survey Act on maps provided at the registry office.

This Service does not represent any government agency. We use open data provided by government agencies that has been approved for commercial use. Regarding open data, please be sure to check the source information for maps in this service and the Groundy guidelines.

■Terms of use
https://www.app.groundy.net/terms

■Groundy guidelines
https://www.app.groundy.net/guideline

■Source of map information
https://www.app.groundy.net/source

■Contact us
https://docs.google.com/forms/d/e/1FAIpQLSdqju2N1p9W2xp8RkxKWKpd0npFApu9xx9J1kSVqMnqva4UzA/viewform?usp=sf_link

■Operating company
Open Digitalize General Incorporated Association
This is a "land information management platform app" that allows you to easily understand and manage various land-related information on a map.
Updated on
Sep 11, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, Personal info, and Financial info
  • This app may collect these data types
    Personal info, Photos and videos, and App info and performance
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

【新機能】
・メンバーを招待して、土地情報をチームで共同管理できる「グループ管理機能」を搭載しました。権限は4段階(オーナー/管理者/編集者/閲覧者)で設定でき、管理項目ごとに公開・非公開を切り替えられます。

【重要なお知らせ】
・従来の「フォルダ共有機能」は、本機能へ一本化されました。現在の共有設定は解除されますので、共有元の方はグループへの移管とメンバーの再招待をお願いいたします。手順はアプリ内の【重要】バナー、または使い方ガイドをご確認ください。

【修正】
・軽微な修正を行いました。

今後も新機能や修正、改善を行って参ります。
小さなことでもGroundyお問い合わせにフィードバックいただけますと大変助かります。
引き続き、「Groundy / グランディ」をお楽しみください!
Content rating
Everyone
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App support

About the developer
OPEN DIGITALIZE, GENERAL INC. ASSOCIATION
contact@opendigitalize.com
1-10-8, DOGENZAKA SHIBUYA DOGENZAKA TOKYU BLDG. 2F-C SHIBUYA-KU, 東京都 150-0043 Japan
+81 90-3813-1901