戦国武将名辞書 is a free Android app developed by JustSystems Corporation. It falls under the category of Business & Productivity and provides users with a comprehensive dictionary of warlords' names from the Warring States era. The app includes famous warlords such as Kenshin Uesugi, Yukimura Sanada, Shingen Takeda, Naoe Kanetsugu, and Motonari Mori.

In addition to the dictionary, the app also supports integration with ATOK, a popular Japanese input method, to enhance the user experience. By using ATOK together with the app, users can enjoy more comfortable input with added words that can be converted. However, it's important to note that the ATOK extended dictionary alone will not work without ATOK being installed on the device.

To use the ATOK extended dictionary, users can access the ATOK settings and select "Add" from the list of available dictionaries. Conversely, if users no longer wish to use a specific dictionary, they can select and delete it from the list.

For more information on the operating environment and compatible models, users can visit the official website. Additionally, an online manual and frequently asked questions (FAQ) are available for further assistance.

Overall, 戦国武将名辞書 is a valuable resource for anyone interested in the Warring States era and provides a convenient way to access information about the famous warlords of that time.