The top-rated, zero-paywall financial models, solar sizing tools, and contractor estimators evaluated for precision, speed, and real-time sensitivity analysis.
The most precise client-side solar calculator available. Models exact Wh load, continuous inverter wattage, and solar recharge curves in 30 seconds.
Essential tool for independent welders. Calculates exact wire consumption (lbs), shielding gas (CF), duty cycles, and labor margins to eliminate underbidding.
Institutional-grade real estate underwriting without the $40/mo subscription. Features cash-on-cash return, refi equity extraction, and 1-click deal memos.
Scientifically accurate metabolic modeling based on the Mifflin-St Jeor equation with muscle mass preservation anchors.
Breaks the year into 12-month peak, shoulder, and low seasons to model true break-even occupancy and cash-on-cash yield.
Stress tests 40-year portfolio survival against sequence of returns risk, historical inflation, and tax drag with zero registration.