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.
If you are a freelancer, consultant, or small business owner operating as a standard Sole Proprietorship or a single-member LLC, you might be overpaying the IRS by thousands of dollars every year. The culprit? Self-employment tax. In 2026, the tax burden on independent earners remains one of the largest obstacles to business growth. But there […]
Inflation is often called the “silent thief” of personal finance. Unlike a market crash, which is loud and visible on every news headline, inflation works quietly in the background, eroding the purchasing power of every dollar you’ve worked hard to save. In early 2026, while we see inflation rates finally cooling toward the 2.4% mark, […]
When the stock market turns red and the headlines start screaming about a “correction,” the natural human instinct is to protect what we have. Our brains are hardwired to view a drop in account value as a threat. But for the long-term builder, this is the Volatility Myth: the idea that a falling market is […]
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