Sparebeat Rate System is an add-on for the Chrome browser developed by bo-yakitarako. This free program adds a quantitative rating system to Sparebeat, a popular online rhythm game platform. The rating value is displayed at the top of the song selection list.

The rating value is calculated based on the player's score and the level of each song. If the score is below 950,000 points, the rating value is determined by the formula: (score - 900,,000 + song level. If the score is 950,000 points or higher, the formula becomes: (score - 950,,000 + 2.5 + song level.

The player's overall rating value is the average of the top 20 rating values from each song. If the player has played fewer than 20 songs, the overall rating value is calculated by dividing the sum of all song rating values by 20.

The Sparebeat Rate System adds a new dimension to the gameplay experience, allowing players to track their skill level and progress over time. It provides a tangible measure of improvement and enhances the enjoyment of Sparebeat. Currently, the system is only available for the official songs.