かぐや様は告らせたいボイスアラーム is a lifestyle app developed by NextNinja Co. Ltd. It is a paid app that offers various features upon selecting and purchasing a character after the initial free download.

The app includes a custom wallpaper feature that allows users to create their own original wallpapers. Users can enjoy their daily life with the characters Kaguya and Chika.

With over 400 words of newly recorded voices for both Kaguya and Chika, the app offers exclusive content that cannot be found elsewhere. It also includes a total of 150 newly drawn illustrations for each character.

Upon the first launch of the app, users can choose between Kaguya and Chika. The character not chosen can be purchased from the in-app shop. The voice and illustration counts include additional packages.

The app allows users to set up to three voices for each alarm. Users can customize both the voices and illustrations to create their own unique alarms, suitable for different situations such as waking up or going out.

In addition, the app features a custom wallpaper function where users can adjust the placement of background and clock, and freely arrange up to 10 parts of illustrations and decorations. Users can create their own personalized wallpapers and have fun with customization.

The app also offers additional packages for purchase, which include new recorded voices, newly drawn illustrations, and anime scene illustrations.

Please note that this app is in Japanese.