HS Fatigue Calculator is a free Chrome extension developed by dev.sam23d. It falls under the category of Browsers and specifically under the subcategory of Add-ons & Tools. This extension is designed to assist Hearthstone players in calculating the amount of fatigue damage their opponent will receive based on the number of cards they draw.

With HS Fatigue Calculator, players can easily determine the potential damage their opponent will take from fatigue. By inputting the number of turns the opponent will draw cards, the extension provides an accurate result of the amount of fatigue damage they will receive. This can be particularly useful for players who utilize fatigue-based strategies, such as mill rogue or druid decks.

Overall, HS Fatigue Calculator is a helpful tool for Hearthstone players looking to gain an advantage by understanding their opponent's potential fatigue damage. It is easy to use and provides accurate results, making it a valuable addition to any player's toolkit.