Private financial scenario simulator

See where your financial what-ifs could lead.

Model FIRE, two job offers, a home purchase, or a career break from simple building blocks. Change timing and uncertainty, then see the simulated outcome range—without connecting an account.

No bank connection. Local save and export included free.

Whatifly hero

What you can expect from Whatifly

1

Your plan stays yours

Financial inputs, scenarios, and results are calculated and saved on your device.

2

Assumptions stay visible

Inspect and change return ranges, probabilities, tax rules, and timing.

3

A useful result comes first

Build a simple projection before choosing whether advanced blocks are worth paying for.

One model, many decisions

Express the life around the numbers.

A savings-rate calculator cannot show what happens when a promotion, job loss, vesting schedule, mortgage, and career break interact. Whatifly can.

A coherent path, not isolated toggles

Connect related events so a job loss can stop salary and future RSUs while employer stock falls in the same simulated path.

Step 1

Build from ordinary financial blocks

Add salary, expenses, investments, property, business income, taxes, and life events without wrestling with a spreadsheet.

Step 2

Give uncertainty a place in the plan

Set timing, ranges, and probabilities in plain language, then inspect the numeric assumptions Whatifly uses.

Step 3

Connect events that belong together

Model job loss stopping salary and RSU vesting, or a home purchase changing cash, debt, expenses, and eventual sale proceeds.

Understand the range

Follow cash flow, simulated balances, bad paths, and the events behind them.

Compare the difference

Put two scenarios side by side and see exactly which changes explain the gap.

Pricing for real decisions

Start useful. Upgrade when your model needs more.

Privacy, local saving, export, and explanations are not premium features. Pay only when you need more powerful blocks and comparisons.

Basic

Build a clear foundation.

$0forever

  • Salary, expenses, and starting cash
  • Estimated ordinary income tax
  • Simple projections
  • Local save, export, and import
Choose Basic

Plus

Compare paths with uncertainty.

$5/month

  • Everything in Basic
  • Investment and contribution timing
  • One-time events and basic uncertainty
  • Two-scenario comparison
Choose Plus
Complete simulator

Full

Model the complicated parts of life.

$9/month

  • Everything in Plus
  • Mortgages, property, and business
  • Equity compensation and crypto
  • Detailed taxes and event dependencies
Choose Full
No renewal

Full week pass

Seven days of Full access for one job offer, home decision, or planning session.

Clear by design

Questions before you model?

Your next decision deserves a range

Add the event. Change the odds. See what moves.

Begin with an editable scenario, get a useful result for free, and replace the example numbers with your own—privately on your device.

Start modeling free