Made for people renting a home in Madrid

Is your rental contract legal?

Paste it or upload the PDF. Fair Lease marks every clause Spanish law doesn't allow, with the exact article and what to ask for instead.

No contract to hand? Try a sample

Samples are fictional contracts with a saved Claude reading, so they open instantly. The rules still run for real.

To try the PDF upload, download the traps contract as a PDF and drop it in the box or use Upload a PDF. Checking it is a live check.

Rules hand-checked against the BOE
The BOE is Spain's official gazette. Every verdict cites the exact article of the law.
Claude reads, the rules decide
The AI only quotes your contract. Fixed public rules give the verdict.
Your contract is not stored
A PDF is read on your device. ID numbers, bank accounts, phones and emails are removed before anything is sent.
Tested on 125 clauses
Nine contracts, every clause given its expected verdict by hand before the app read it, and compared with asking the AI alone.
How it's tested, misses included