It is a category to post free sound effects · SE material used for the app. We publish sound effects such as sound effects for smartphone application for iPhone and Android. There are various genres of apps, such as business apps, photo and video editing apps, educational apps, learning apps, etc. Touch sounds, button sounds such as click sounds, swipe sounds, etc. that can be used with the various apps. There are also sound effects and SE to produce the effects of. If you are developing an app, etc., and you are looking for free materials for sound effects to use in the app, you can search from this category.