Free tools
Honest, no-sign-up calculators that answer the question before you commit money — does this arbitrage actually clear fees? How fast can I kill this debt? Built the same way we review platforms: real math, real caveats.
See whether a price gap between two exchanges actually clears fees — or quietly loses money.
Open calculator →How fast you'll be debt-free, the total interest, and what an extra payment really saves.
Open calculator →Model Airbnb rental arbitrage: rent + costs vs projected nightly income = real monthly profit.
Watch a starting balance + monthly contributions compound over time at a given return.
Add up card rewards + portal cashback + app rebates on the same purchase.
Is that Freecash/Earnlab offer worth your time? Convert coins + time into a real hourly rate.
Long spot, short the perp: estimate the funding you collect, delta-neutral, after fees.
Open calculator →Three-pair loop on one exchange — see whether the cycle actually clears trading fees.
Long/short to convergence: estimate P&L as a perpetual's premium or discount closes.
Model spread capture + maker rebates on a stable pair, net of inventory risk.