Seems pretty cool to me. I like how it allows you to set your current savings total, savings per year, set known spending events, and then it simulates out for your expected life span. It seems you can tinker with everything. Might be more powerful than something like cFiresim.
I might make a feature request to allow user to tinker with AA, as now it appears to take your AA, figure out the CAGR and volatility, and run simulations from that.
