ClusterNow

5K+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image

About this app

This app displays information from J-Cluster, a Japanese amateur radio web cluster used exclusively by amateur radio operators.

* Features
・Cluster Information Display: Displays J-Cluster information.
・Selective Display: Displays spots by all modes, CW, phone, digital, and commemorative stations.
・Custom Display: Displays spots for up to three modes and bands of your choice.
・Detailed Display: Tap a spot to view its details.
・Commemorative Station Coloring: Colors the call signs of special commemorative stations and commemorative stations (with prefixes 8J, 8N, 8K, 8M, and JA3XPO).
・JARL Station Coloring: Colors the call signs of JARL stations (JA?RL, JA?YRL, JA1YAA, JA1TOKYO).
・Date Display: Displays the date in the spot information.
・Write: Write spot information.
・Specify the number of latest data points: You can select the number of latest data points.
・Display the latest Es information: Displays the latest NICT fxEs information above the spot information.
・Display Es: Displays NICT Es information and ionogram information.
・Display DXSCAPE information: Displays DXSCAPE information.

* Restrictions
・Selective display selects the appropriate mode from a maximum of 1,000 data points.

* App permission information
This app requires the following permissions.
・Network communication:
Access the J-Cluster website (http://qrv.jp/) and the DXSCAPE website (http://www.dxscape.com/)
to obtain cluster information, and access the NICT websites (https://wdc.nict.go.jp/Ionosphere/realtime/) and (https://wdc.nict.go.jp/Ionosphere/realtime/fxEs/latest-fxEs.html)
to obtain ES information.
Updated on
Aug 20, 2025

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.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

What’s new

- 新しい Android バージョンに対応しました
- NICT fxEs を標準で表示するように変更しました

App support

About the developer
山本直明
makonaojp@gmail.com
Japan
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