To Check is a minimalist app for your checklists. Groceries, movies, calls or even your daily to-do list, anything will fit on this app. It includes some helpful features, such as a toggle for showing/hiding completed items and whether to sort the list alphabetically, along with a dark and a light theme.

Additionally, the app is entirely open source. Find the code at https://github.com/juanferrer/to-check.