I built a very simple tool to see if my investments could be improved upon. In short, if i would have placed the same amount of money in a different stock or crypto for example, would i have done better?

It's open source and in-browser (using local storage), meaning investment data stays private in your browser between you and your browser (yourself). Everything is in 1 html file only which you can use or copy and change yourself. Lastly, in order to get stock and crypto prices, it does use 2 api's (Twelve Data & Alpha Vantage)

Hope it's helpful for you guys and let me know if you have any suggestions.