REI Toolkit

11 real-estate calculators in one toolkit. No subscription, no account, works offline. Built for flippers, landlords, BRRRR investors, wholesalers & spec builders.

Run the numbers before you make the offer.

REI Toolkit is the deal-analysis kit for real estate investors who'd rather walk away from a bad deal than learn about it later. Flippers, landlords, BRRRR investors, and wholesalers — every tool you reach for between "I might offer on this" and "I'm signing." No subscription. No account. Works offline.

THE TOOLKIT

• Flip Calculator — purchase, rehab, holding, and selling costs vs. ARV. Real ROI, not the back-of-the-napkin version that ignores six months of insurance. • New Construction — ground-up and teardown spec builds: land, hard and soft costs, and construction financing against ARV, down to cost per square foot. • 70% Rule / MAO — the wholesaler's max allowable offer, ready before the seller hangs up. • Rental Property — cash flow, cash-on-cash, NOI, and the 1% rule check on every deal. • Cap Rate — quick screen with market-tier interpretation, so you know whether to bother modeling the rest. • BRRRR — tracks cash-left-in-deal so you know when you've truly recycled your capital. • Amortization — full loan schedule, total interest, payoff modeling. • Refinance Break-Even — the real break-even, including closing-cost drag. • Wholesale Offer — max offer to seller, after the end buyer's MAO and your assignment fee. • DSCR — debt service coverage ratio with lender-tier interpretation. See if the deal funds before you write the offer. • GRM — gross rent multiplier for fast screening before a full analysis.

WHY REI TOOLKIT

• Start free, unlock once. A single one-time purchase opens the complete toolkit — no subscription, no monthly bill, ever. • No account, no cloud. Your deal numbers stay on your phone. • Works offline. Walk a property without bars and still hit the numbers. • Free updates as we add tools.

Made by the team behind GroundUp, the construction project management app used by residential builders and active investors.