Currency converter
Transparent USD cross-rates with rate age.
Open tool →🧰 The useful cornerMONEY TOOLS,
MONEY TOOLS,
DUDE.
Eight focused calculators and checkers. Simple math stays local in your browser; provider rankings appear only when reviewed evidence clears the gate.
Fast math.
Real caveats.NO GUESSWORK.No third-party BIN API · no hidden thin lists
Real caveats.NO GUESSWORK.No third-party BIN API · no hidden thin lists
IBAN checker
Country length and chunked MOD-97 validation.
Open tool →Card BIN checker
Scheme, Luhn, masking, and a local R2 snapshot.
Open tool →Remittance comparator
Reviewed flat fees and FX margins with a three-app gate.
Open tool →Crypto fee calculator
Network fee plus provider-spread scenarios.
Open tool →Compound interest
Monthly contributions and year-by-year growth.
Open tool →FIRE calculator
A visible-assumption independence target.
Open tool →Virtual card finder
Reviewed region, funding, virtual-only, and free-tier filters.
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