艦これタイマー is a Chrome extension developed by jigsaw. It is a useful tool for managing the time of expeditions and repairs in the popular game Kantai Collection. With this extension, players can easily keep track of the time remaining for their fleet's expeditions and repairs.

The extension provides a simple and intuitive interface that allows players to set timers for each task. It also includes preset timers for common expeditions, making it even easier to manage multiple tasks at once. The timers can be easily started, paused, and reset with just a few clicks.

Overall, 艦これタイマー for Google Chrome™ is a handy tool for Kantai Collection players who want to efficiently manage their in-game tasks. It is available for free and can be easily installed from the Chrome Web Store.