Your retirement isn't one number. It's a range.
RetireRange runs thousands of market simulations to show the full range of outcomes for your plan — then lets you compare strategies, optimize the big decisions, and see your real odds of success.
$20/month. Cancel anytime. No assets to connect, nothing to sell.
The problem
You're stuck between a toy and a black box.
On one side: free calculators. Type in your savings and they hand back "$1.4M" or "you're on track" — a single number built on the fiction that markets, inflation, and your lifespan are all knowable. They aren't. The order your returns arrive in matters as much as their average; a downturn early in retirement does damage a late one never would. A one-number calculator can't see that risk.
On the other side: a financial planner. They'll build you a real model — but it's their model. You don't control the inputs, you can't poke at the assumptions, and you can't sit down on a Sunday and ask your own "what if." You get an answer, not the keys.
A planner-grade model that's actually yours. You control every input, you test your own ideas, and you watch the odds move in real time.
How it works
Four steps. The last two are the ones you'll live in.
Build your model
Household, accounts, contributions, Social Security, spending, market assumptions. Start from defaults or take control of every number. Nothing is hidden.
Run thousands of simulations
5,000 randomized market sequences by default — each a different plausible future — capturing the volatility, inflation, and sequence risk a single projection ignores.
Change one thing. Run it again.
Shift a claiming age, a withdrawal rate, a savings amount, and watch your odds move. Save each version so nothing gets lost and you can compare them later.
Compare and optimize
Put your finalists head-to-head against the same market sequences to see which strategy actually wins — or hand a decision to the optimizer.
The point isn't to reach step 4 and stop. It's that steps 3 and 4 are yours to run as many times as you want.
What makes it different
Built for the decisions that actually move the needle.
A range, not a guess
A probability of success and the full range of outcomes — the middle 80% of them shown as bands over time, the same way professional planners model risk. Not the one optimistic line everyone else draws.
Compare strategies on equal footing
Save named scenarios — "Claim Social Security at 62" vs. "at 70" — and run them against the same market sequences, so the difference reflects the strategy, not luck.
Let the optimizer find the best move
Hand it a variable — claiming age, withdrawal rate, conversion schedule — and it searches for the value that maxes out your success rate, so you're not guessing and checking by hand.
Experiment freely
Change any assumption and watch your odds move in real time. Can I retire at 55? What if returns disappoint? A sandbox for the questions you actually lie awake thinking about — and a way to answer them so that you can sleep soundly.
Results in plain English
One click turns a screen full of percentiles into a plain-language read on your plan, generated by Anthropic's Claude. Built for understanding, not advice — never a recommendation.
Stress-test against real history
Replay your strategy against every market sequence from 1928 to 2025 — 98 actual start years, including 1929, 1966, 2000, and 2008 — and see how it would have held up.
Honest about what it is
A model, not a crystal ball.
Every result is a projection built on assumptions you control. RetireRange is rigorous, but it's still a model — and modeling is a judgment call, not a prediction. We show you probabilities and ranges precisely because the future doesn't come with guarantees, and we'll never pretend otherwise.
Pricing
One plan. Everything included.
30-day free trial
Every feature — Monte Carlo simulation, the optimizer, strategy comparison, historical backtesting, Social Security and Roth modeling, the health-insurance bridge. No tiers, no add-ons, no upsells.
Cancel anytime. We don't connect to your bank, hold your money, or sell your data.
See your retirement as a range.
Stop planning around a single number that was never going to be right. Run your first simulation and find out what your plan can actually handle.
Start your 30-day free trialThen $20/month. Cancel anytime.