UDisc (/judɪsk/) is a disc golf app for scorekeeping, statistics, and discovery for smartphones and tablet computers running the Android or iOS operating system.

[2][3] It gives access to an extensive community-driven course directory with user-submitted course condition updates, hole-by-hole navigation information about course layouts, and a chronological list of local PDGA-sanctioned events.

[4] The app can be downloaded and used for free, but an optional in-app paid subscription to UDisc Pro unlocks more features.

[5][6][7] In late 2017, UDisc implemented an integration with Dynamic Discs Winter Marksman leagues worldwide.

[13][14] Data collected using the app plays an important role in the development of the sport's key statistics for comparing players.