Timelines is a time-tracking and data-visualization service designed to make recording and exploring events straightforward. Users can create unlimited timelines for topics across their lives, add values to events, and review those values to understand trends. Its timeline view supports quick movement through a stream of data, while adjustable detail ranges let users zoom from a broad, decades-long perspective down to individual seconds.

Templates help simplify the process of tracking recurring events, and collaboration features allow multiple users to work on the same timeline. Timelines also provides access to data anywhere, anytime, and on any device, according to its website. For developers, the Timelines REST API makes it possible to connect an app and create, edit, or delete timeline events.

The service presents itself as an accessible tool for organizing time-based information, whether users want a high-level overview or a closer look at specific details. The website offers a download option and includes privacy, terms, and developer information