音量調整 in ステータスバーVolumeIcon is an Android app developed by FeeeeeLog that allows users to adjust and monitor their device's sound volumes conveniently. Unlike other similar apps that display volume controls on the home screen or as widgets, this app displays the controls in the status bar, making it easier to access. The app has three primary functions, including displaying four volume levels in the status bar, displaying six volume levels in the notification area, and recording volume change logs. The app is free to use and falls under the multimedia category, specifically music and radio subcategory.

The app's primary advantage is that it reduces the number of steps required to check and adjust sound volumes. Users can view and adjust the volume levels without leaving the current screen. Additionally, the app does not interfere with other running apps when adjusting the volumes. However, the app uses one notification area to display its controls, which could be a disadvantage if the user receives many notifications.