Interactive financial models that turn complexity into clarity—so you can see outcomes before you live them.
A decision-support platform that makes invisible consequences visible.
Life decisions don't fail because people are careless. They fail because the math is invisible, the timelines are long, and the consequences arrive quietly.
Cortex builds interactive models that let you see outcomes before you live them.
Real-world financial logic
Clean, explorable interfaces
Forward-looking scenarios
Human-centered design
The goal isn't prediction. The goal is better judgment.
Our first suite focuses on personal and small-business finance—where small decisions compound dramatically over time.
See how your money grows over time with different contribution strategies and rates.
Try for FreeSimulate historical returns and volatility for popular index ETFs like VOO, VTI, VT, and QQQM.
Try for FreeAllocate resources under constraints with AI-powered optimization and flexibility analysis.
Try for FreeSee the wealth gap between playing the odds and owning the market. Redirect toward building real wealth.
Try for FreeAdvanced decumulation planning with Roth conversions, tax optimization, and sequence risk analysis.
Try for FreeMaximize retirement contributions while optimizing your S-Corp owner compensation.
Learn MoreUnderstand the true cost of vehicle ownership including depreciation and opportunity cost.
Learn MoreCalculate self-employment tax savings and find your ideal salary/distribution split.
Learn MoreCompare renting vs buying with opportunity cost, maintenance drag, and tax treatment.
Learn MoreCompare avalanche vs snowball strategies with psychological weighting and opportunity cost.
Learn MoreCalculate wealth-building potential by comparing income, taxes, and cost of living across all 50 states.
Learn MoreTrack assets and liabilities, analyze liquidity and momentum, and visualize your financial trajectory.
Learn MoreFind out if your current savings will grow to your retirement number on their own — no more contributions needed.
Try for FreeEach tool is built to answer one question clearly:
“If I choose this path, what actually happens?”
Most tools give answers.
Cortex gives context.
Most platforms optimize for engagement.
Cortex optimizes for clarity.
Most advice is static.
Cortex is interactive, scenario-based, and personal.
You don't need another opinion.
You need to understand the system you're operating inside.
Strategies, frameworks, and deep dives into making better financial decisions.
Albert Einstein reportedly called compound interest the “eighth wonder of the world,” adding, “He who understands it, earns it… he who doesn’t, pays it.” In 2026, with the speed of information and the pressure for “instant” results, the quiet, relentless power of compounding is more overlooked than ever. At Cortex, we don’t believe in get-rich-quick […]
The old-school financial advice was simple: “Never lease. It’s just renting a car you’ll never own.” But as we move through 2026, the rapid evolution of automotive technology—specifically in the Electric Vehicle (EV) and software-defined vehicle space—has flipped the script. The math of depreciation has changed, and blindly buying could be a costlier mistake than […]
When it comes to debt, we often feel forced to choose a side: are you a “Snowballer” who craves psychological wins, or an “Avalanche” follower who demands mathematical efficiency? The truth is, for most people in 2026, the rigid binary between these two methods creates a point of failure. Enter the Hybrid Debt Strategy. This […]
Choose the plan that matches where you are today.
For exploration and curiosity.
For people who want precision.
For people who want a thinking system.
Not advice
Not a course
Not a spreadsheet farm
It's a cognitive assistant—a place where logic, time, and consequence meet.
We design for the part of your brain that plans, weighs outcomes, and resists impulse.
Cortex is built by humans who care about rational decision-making, personal agency, and designing tools that respect intelligence.
No dark patterns
No urgency traps
No pretending life is simple
Just clearer thinking—one decision at a time.
Start thinking clearly