Underwrite a flip in 10 seconds.
Paste a Zillow link or enter a property. We compute ARV from real comps, all-in costs from regional baselines, and give you a BUY · MARGINAL · PASS verdict — with the risks your agent won’t mention.
No credit card. Free tier covers 2 deals/month.
How it works
Skip the spreadsheet. Get to a decision.
1. Paste or enter
Drop a Zillow or Redfin URL, or type the property details. Five fields, ten seconds.
2. We do the math
ARV from real comparable sales. Rehab cost from regional baselines. Holding, closing, and selling — all-in cost, deterministic.
3. Get a verdict
BUY · MARGINAL · PASS with a margin %, an honest profit range, and the risks you’d miss in a spreadsheet.
What you get
The honest underwriting your spreadsheet can’t do.
Deterministic math, no LLM hallucinations
Every number — ARV, costs, margin, profit — comes from auditable rules and real comps. The AI only translates the result into plain English.
Honest ranges, never false precision
$8K–$28K profit, not "$18,243.27". The market doesn’t give you a single number, so we don’t pretend to either.
AI-written explanation per deal
Claude Sonnet turns the verdict into a 2–3 paragraph narrative — why it’s a buy, what would flip it, what to do next.
Sensitivity sliders for stress testing
Drag ARV down 10% or rehab up 20% and watch the verdict in real time. Catch the deals that only work on paper.
Save deals, compare side-by-side
All your analyses persist to your account. Pick 2–4 saved deals and we highlight the winner per metric.
Risk flags you’d actually miss
Pre-1940 builds (lead, asbestos), weak comp quality, $/sqft above market, margin near the PASS threshold — flagged automatically with deal-specific context.
Pricing
Free for the casual deal-hunter. $39/mo when you go pro.
2 deals/month free, forever. Paid tiers launching soon — sign up free to lock in early pricing on Pro / Investor / Power.
See full pricingStop paying for deals that look great on paper.
Run your next opportunity through FlipFox before you write the offer. One bad deal saved pays for years of Pro.
Get started free