AppTapp Research B.V. (formerly Infini-Dev) is a development team founded by Sam Guichelaar, responsible for one of the two major forks of Icy, and later, Installer 5.
On 27 January 2018[1] Owing to the team's heritage, starting out by continuing Nullriver's Installer, it inherits its name from Nullriver's AppTapp Installer, one of the first jailbreaks.
, the team renamed to AppTapp.In 2019, AppTapp released the source code of Installer 3 and 4 under the MIT License in cooperation with its original owners.
, AppTapp similarly released the source code of