Whatif S&P 500 calculator

Shows result of continuous investments into SPY - SPDR S&P 500 in taxable and tax-deferred (e.g. IRA) accounts.

Useful in illustrating how a steady, long-term savings plan builds a decent nest egg. For example, what if a person had put away just $3 per day for the last 5 years?

I wrote the original calculator as a webapp for a motorcycle forum discussion, but wrapped it into an Android for carrying around.