Uncompromising mathematical rigor, open to all.
We believe financial tools should be transparent. No hidden variables, no proprietary black boxes. Just pure, audited formulas designed to model your future down to the penny.
100%
Audited formulas
0
Lead-gen forms
Built on absolute trust
Zero Gated Access
Audited Equations
Real-Time Baselines
We never demand your email, phone number, or personal details. Your financial models belong entirely to you, stored locally on your device.
Every calculator runs on industry-standard financial equations, fully documented and verified against institutional benchmarks.
Tax brackets, inflation rates, and standard deduction limits are updated continuously to reflect current regulatory realities.
Our core equations
We lay bare the exact equations powering our suite. No approximations, no hidden adjustments.
Loan EMI Formula
Compound Interest
Used to calculate fixed monthly payments where principal and interest shift over time.
Models the exponential growth of recurring monthly contributions alongside a lump sum.
FV = PV × (1 + r)^n + PMT × [((1 + r)^n - 1) / r]
PMT = [P × r × (1 + r)^n] / [(1 + r)^n - 1]
Where FV is future value, PV is initial principal, and PMT is monthly contribution.
Where P is principal, r is monthly rate, and n is total months.
Ready to run your numbers?
Access our complete suite of precision modeling tools with zero paywalls.