Once a day is a free Chrome extension developed by Erik Häyry. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory.

The main purpose of Once a day is to help users reduce screen time and increase productivity by limiting their visits to each website to only once a day. This extension is particularly useful for individuals who want to minimize the amount of time they spend in front of their screens without the added stress of countdown timers or strict time limits.

Once a day does not require any initial setup. Users simply need to install the extension and it will start working immediately. Additionally, the extension provides the option to whitelist specific websites that users may need to visit more than once a day.

With Once a day, users can easily manage their screen time and enhance their overall productivity. It offers a simple and effective solution for those looking to optimize their online activities.