TimeCheck is an iMessage extension designed to streamline the process of finding suitable meeting times among group members. By matching snapshots of schedule availability, it allows users to select times when everyone is free. The extension can be accessed within existing text threads or new messages by tapping the TimeCheck icon, where users can input details such as time needed and date ranges.

The tool also features a one-tap iCal sync to gather availability snapshots effortlessly. Recipients only see the resulting time windows without access to individual schedule details, ensuring privacy. Once responses are collected, users can choose a suitable time, and an "add to calendar" button appears for easy scheduling. TimeCheck is ideal for coordinating social gatherings, meetings, and various activities.