SkyWPilot

This app is highly customizable and instantaneously calculates 401k balances for each year throughout your career.  

Enter your current category, desired year of upgrade, a future switch to another fleet, your hire date, your planned age of retirement and much more. Set your 401K contribution percentage, an estimated market return rate, your current 401k balance and even toggle on individual and combined IRS limits.  You can also account for inflation using Consumer Price Index historical data or set your own forecasted inflation rate.

This app also contains quick reference tables for the current published fleet pay rates.