The rent receipt generator takes your name, your landlord's name and PAN, the address of the rented property, the monthly rent, how it was paid and the months it covers, and makes one numbered, dated receipt for each month, with the amount in figures and in words in lakh and crore.
Payroll asks for rent receipts as proof when you claim the HRA exemption, and needs the landlord's PAN once the rent is over ₹1,00,000 a year. Cash receipts over ₹5,000 carry a box for a revenue stamp. Print the receipts or save them as a PDF, two or three to an A4 page, and have each one signed.
It is free and needs no sign-in, and nothing typed into it is kept. Signed in, it can start from the tenancy saved in your year and save the landlord back to it.