Household food waste levels pose a considerable problem in terms of sustainability. Food stock management applications for smartphones are interventions that support people in planning and keeping an overview of their food stock in order to reduce food waste. So far mainly their usability and effectiveness for reduction of food waste have been researched in HCI. This study aimed at investigating how these applications are being integrated into people’s food practices, and how their features contributed to the integration. In a three-week long field study seven participants used one of two applications in their daily lives. Through interviews and diary entries it was observed that some people integrated the applications into their food practices to replace other actions like checking one’s food stock. New connections to the food practices were created through expiration reminders and providing means to check the food stock from a distance. Reminders were seen as helpful even if not always necessary and can be seen as an opportunity to further support the integration process. The main issues for the integration were the high-effort adding processes and remembering to update the inventory after consumption.