Payday.

You keep the house running. You remember the dentist appointments, buy the birthday card, do the third load of laundry this week, and somehow also work a full-time job. Do you hear a single thank you? Of course not. They're on the sofa.
Introducing Payday — the invoice app for every unappreciated thing you have ever done for another human being.
Create a professional-looking invoice. Specify the work. Set your payment terms — a night out with friends, a day at the spa, a week of uninterrupted sleep-ins, a new handbag, dinner out, your choice. Then send it directly via SMS, email, or WhatsApp. No app to download on their end. Just an invoice. Landing in their inbox. At 11pm on a Tuesday.
FEATURES:
— Five ready-made templates: The Dishes, The Laundry, The Ungrateful Friend, The Dentist, The Mom Special
— Create your own invoice from scratch, or edit the templates to your liking
— Auto-generated invoice numbers, because nothing says "I have been keeping score" like INV-00087
— Share via SMS, Email, or WhatsApp — no accounts needed
— Invoice preview before sending — because reading it back is half the fun
— No accounts. No data collected. Nothing is stored anywhere it shouldn't be.
Is it legally binding? Absolutely not. Is it deeply satisfying? Ask the person who just received INV-00001 for "Operation: Dishwasher Exists For A Reason."
One-time purchase. No subscriptions. No hidden fees. Unlike some people's contributions to the household.
Payday is a novelty app for entertainment purposes only. Invoices generated are not legally binding documents.