Receipt Keeper archives receipts and invoices in a structured manner, with protected access via Google or email and password. Each receipt can contain optional items with individual amounts, and the final total is calculated automatically. From the administrative area, it's possible to insert, modify, and create receipts complete with all details, generating a vertical PDF that also includes itemized details. The integration with TightWallet completes the cycle: when a receipt is marked as paid, the corresponding transaction is created on the dedicated account, keeping accounting aligned without duplicate entry. The interface is responsive and the theme is customizable.