Bloomberg Terminal in Your Pocket
The Monte Carlo simulations are fast (100k paths in about 20 seconds on my iPhone) and the correlation modeling actually shows how stocks move together - something most portfolio apps completely ignore.
The historical crash backtesting feature is brilliant. Being able to run my portfolio through 2008 or March 2020 makes risk feel real, not abstract. You can see how diversification fails when you need it most.
UI is clean, no ads, no subscription nonsense. Just solid analytics. The risk metrics (VaR, CVaR, drawdown) are what professional traders use but explained in a way that makes sense.
Hard to believe a high school student built this. If you're serious about understanding portfolio risk, this is the best free tool on iOS by far.



