The Volume Stabilizer Hub is helpful when using your mobile device in a loud environment, such as a library or on a bus. It allows you to customize volume settings on every app on your device so you can still hear sound. This also works well when listening to music while riding the subway or any other form of public transportation.

The app’s logo features a gear and volume icon in the same blue tone. It’s easy to understand the app’s design thanks to the straightforward approach and classic feel. When viewing the logo, we notice a bold black and white color scheme that perfectly complements the app’s function. The Home page of the app provides an organized list of user-friendly tools. It features the “Volume presets” and “Volume sliders” along with a gray gear labeled “More volume settings.” Clicking on this gear reveals all personal settings and adjustments. A right-side overlay menu provides extra options; it's accessed by a three-dot icon in the top right corner of the display. A cart icon appears on the display's upper right to facilitate in-app purchases, which we'll examine in more detail later. With a minimal design, the main settings screen displays three sections for the Pro Settings, General Settings and Additional Stuff. However, there's no option to easily access additional settings like a hamburger menu or quick settings. This leaves some individuals frustrated by the difficult experience they receive.

An app named Precise Volume provides a set of about 100 volume controls for users to use for free. Each control is customizable and adjustable, making users' phones louder or quieter, among other things. This app also helps to protect hearing by customizing different volumes for earphones or headphones. You can adjust the individual volumes for the ringer, notification and system sounds in the Volume Settings. You can also toggle the Call Volume on or off, which will independently adjust the top speaker's volume. When in the Precise Volume app, you can press any button on your phone to access Media by default. This feature is locked behind a toggle below the option to lock volume buttons to media. This app provides a full-featured Equalizer that you can use to create your own presets. It also has a Volume Booster and Bass Booster; the latter is great for EDM fans. Both of these features improve the volume or bass tones of music you like— or make them boomier if you like EDM. This app also includes a Stabilizer for any music genres you enjoy, which is great for songs with small vocal notes. The free version of Headphone Companion allows users to set the Headphone Volume Limit and Manage Presets. Setting Headphone Volume Limit makes it easier for headphone wearers to protect their ears. The Presets feature allows you to quickly and easily modify the volume in different situations. For example, when you're driving with headphones or an earphone that is plugged into the AUX cable. At this time, the app only contains a few advanced features. Pressing the API button will change Precise Volume's functionality so that it doesn't conflict with your phone. Another feature is popup notification reporting, which notifies users whenever their volume settings change or when an incoming notification appears. Additionally, the app includes configuration activation and notification reporting. With these features, the app can be used for technical purposes only. We hope that users won’t encounter this issue. We believe that the current version of the program needs more professional and modern features. Additional features don’t convince us as a result.

In addition to standard apps, the Precise Volume app provides premium features. These include removing all annoying ads; making the “More Volume Settings” headings invisible; and beefing up the app's accuracy with a paid version. Using a Pro upgrade offers additional features, including increased accuracy and extra features. The free version of Pro only lets users adjust up to 100 volume levels. By comparison, the default Android version allows users to adjust up to 15 levels. Plus, Pro users can adjust volume steps between 0 and 1,000,000. That's much higher than the default Android version and free version! With Automatic Volume, you can adjust the sound right away. This is because it blends into your life, giving you more control levels than Precise Volume. Both programs have a popup when connecting headphones or bluetooth. When this happens, users are asked to choose the proper preset for their headphone. This version is more versatile because it provides added functionality for a wide variety of purposes. You can view these additional purposes in a moment below. Precise Volume can be used only within the app itself. This is because the app can't use any external audio resources; it must use the ones contained in its database. Additionally, it can't be used outside of an app when the screen is off. The volume control notification feature and dark UI/app theme can still be used even when the screen is on, which is useful for OLED screens. Precise Volume also has a volume curve feature that lets you adjust the speed at which sound changes between minimum and maximum volumes. Other features include Volume Buttons Override and Volume Control Notifications. Both allow users to adjust their volume from anywhere, while Audio Curve can change the speed of volume going from minimum to maximum or vice versa. Precise Volume allows users to combine all volumes muted so that you don't need to worry about separate sounds not changing when you change one of them. However, there's one flaw with this app— you can't use it without first launching it. When using the app's free version, you must switch to the app in order to use it. If you have previously used the Precise Volume app, you can easily access it through the notification bar.