Want to invest like Warren Buffett or Carl Icahn? Or at least peek at their recent investment strategies? There’s an app for that. Most advisors will treat iBillionaire more like a fun simulation game than a source of serious investment magic, but that doesn’t take away from the fun. Retail investors may actually learn something. The cool thing is that the world’s most successful investors are often happy to open the kimono on their general investing strategies. The iBillionaire app takes it to the next level by analyzing the investment practices of thousands of investors, allowing you to take snapshots of what they buy, sell and hold each quarter. It provides alerts of big transactions by 15 of the world’s most successful investors. It has lots of bells and whistles, but the magic is in being able to track their performance versus the S&P 500. Enter your own portfolio. Doing so gives you access to more information. You can now compare your investment chops against your heroes. Prepare to be humbled.