StatsPlus for CoinStats is a browser extension developed by 12SM. It is a free add-on and tool in the Browsers category. This extension provides additional statistics for CoinStats portfolios, addressing the issue of lax calculations in the original platform.

With StatsPlus, users can easily add a Cost Basis and Net Costs calculation to the table header on the CoinStats web interface. By installing the extension and logging into their CoinStats account, users can visit the transactions page of any coin they are currently holding. They can then click on the extension in their toolbar to see the added calculations in the table header.

The extension uses formulas to calculate the Net Costs and Cost Basis. Net Costs is the sum of all costs from purchases minus the sum of all proceeds from sells. Cost Basis, also known as Average Net Cost, is the net costs divided by the user's current holdings. These additional calculations provide a more accurate representation of the user's current position.

StatsPlus for CoinStats aims to enhance the functionality of CoinStats portfolios by providing users with more comprehensive statistics. While currently focused on a single coin and not the all transactions page, the developer may add more calculations in the future based on user requests. Overall, this extension offers a convenient solution for users looking to improve their portfolio management experience on CoinStats.