Last reviewed April 2021. Product structures and categories may have changed since — worth a sanity check against a current source. Fix this pageStocksIn this sectionShould I invest in smallcase? Smallcase has tools which can help managing a stock portfolio better than most platforms. But do your own due diligence, before you invest in a smallcase; and not just because the CAGR looks great.What is the best app for buying or trading stocks? Pick a discount broker you're comfortable with, as per your investment style and functionality requirementsWhich screener(s) should I use? Pick a screener which doesn't bias you for or against a stock. But you should compute the ratios yourself, from ARs, to understand the assumptions behind those computations.The Stock Market Has Crashed. Which Stocks Should I Buy? Corrections in the stock market aren't unusual. Do your own due diligence before buying stocks.