Ba dum tsssh! is a multimedia app developed by Sami Viitanen for Android devices. It is a free app that falls under the Music & Radio subcategory. The app's name is self-explanatory - it has one big red button that plays the "Ba dum tsssh!" sound effect when tapped. The app doesn't have any other features or functions besides the sound effect. The app was last updated in February 2013, and the developer has stated that there will not be any new versions due to the loss of the signing key used for releasing the software.

Ba dum tsssh! is a simple and straightforward app that delivers what it promises - a rimshot sound effect. It is a fun addition to have on your phone, especially if you enjoy making jokes and delivering punchlines. However, if you're looking for something more than just a sound effect app, this app might not be for you. Overall, Ba dum tsssh! is a decent app that serves its purpose well.