Reminders is a free productivity app developed by Apple Inc. that helps users keep track of their daily tasks. This app is available exclusively for iPhone users and can be synced with other Apple devices via iCloud.

Reminders is designed to be fast and easy to use, allowing users to create to-do lists with Siri voice commands or by tapping the quick toolbar to add alerts, flags, or attachments. The app also supports keyboard shortcuts to speed up workflow and has a widget feature for easy access to reminders lists.

With Reminders, users can organize their tasks with tags, subtasks, and templates. The app has a Tag Browser that lets users quickly view tagged reminders and Smart Lists that automatically organize upcoming reminders. Users can also sort reminders by title, priority, due date, or creation date, or manually move reminders up and down within any list.

Reminders also offers intelligent features that suggest reminders based on past tasks and natural language support that allows for easy creation of recurring reminders. Additionally, users can collaborate on lists with others and assign reminders to people they share lists with.

Overall, Reminders is a great app for anyone looking to stay organized and on top of their daily tasks. It's simple, easy to use, and has a wide range of features to help users manage their time and productivity efficiently.