Model borrowing and repayments
Explore how existing debt, future draws, interest, and repayments change your projected balance. Compare assumptions before you settle on a plan.
ABOUT STACK RUNWAY
A clearer view of
your Bitcoin plan.
Stack Runway is a Bitcoin-backed planning tool that helps Bitcoin holders compare borrowing, repayments, and collateral risk over time.
Change the assumptions. Compare the outcomes. See where a plan starts to come under pressure.
THE PRODUCT
What Stack Runway does
Bitcoin-backed borrowing brings several moving parts together. The planner lets you explore them in one model.
Understand collateral pressure
See how a changing Bitcoin price affects modeled loan-to-value and lender thresholds. Identify points where your assumptions leave less room for error.
Compare borrowing with selling
Explore the tradeoffs in a loan-versus-sell scenario. Keep the assumptions visible so you can understand what drives the comparison.
Save and revisit scenarios
Save snapshots of your plan to revisit and compare different scenarios.
THE APPROACH
What makes Stack Runway different
Built around Bitcoin
The model focuses on Bitcoin-backed borrowing, debt, and collateral risk.
You control the assumptions
Explore price paths, interest, draws, and repayments. A projection depends on the inputs you choose.
The method is open to inspection
Read the methodology and risks to understand the model’s assumptions and limits.
WHO IT’S FOR
Who uses Stack Runway?
Designed for people who want to work through a Bitcoin-backed plan before acting on it.
- Bitcoin holders comparing borrowing with selling.
- Borrowers exploring future draws and repayments.
- People checking how a price decline could affect collateral.
- People comparing several versions of the same plan.
Jimmy SmithIndependent developer
THE PERSON BEHIND THE PRODUCT
Built by one developer.
Shaped by real feedback.
I’m building Stack Runway to make Bitcoin-backed planning easier to work through. My focus is on clear assumptions, useful comparisons, and making the model understandable.
Stack Runway is independently developed. If something is confusing or you spot a problem, I want to hear about it.
Share feedback or get help →GETTING STARTED
How Stack Runway works
Start with a scenario
Open the planner and enter the assumptions you want to explore.
Change one thing at a time
Compare draws, repayment choices, or price paths and see what changes.
Learn the basics and review the limits
Explore worked examples in the Learning Center, then check the methodology and your lender’s terms before making a borrowing decision.
AT A GLANCE
Key facts
The basics, in one place.
- Name
- Stack Runway
- Category
- Bitcoin-backed planning software
- Developer
- Jimmy Smith · independent developer
- Core tools
- Borrowing, repayment, collateral-risk, and loan-versus-sell modeling
- Plans
- Free and Pro · view pricing
- Support
- Contact support
- Website
- stackrunway.com
A FEW COMMON QUESTIONS
Frequently asked questions
Does Stack Runway offer loans?
No. Stack Runway is a planning tool. It does not provide loans or manage your lender account.
Are the results predictions?
No. Results are estimates based on your inputs and the model’s assumptions. Actual prices, fees, lender calculations, and liquidation procedures may differ.
Can I try it before choosing Pro?
Yes. Start with the Free planner and review the plan comparison when you need more saving or reporting capacity.
Where can I learn the basics?
The Learning Center explains borrowing, interest, collateral, and loan-versus-sell comparisons with worked examples. Read Methodology & risks for the model’s assumptions and limits.
WORK THROUGH YOUR NEXT “WHAT IF”