Customers and balances
Name, phone, optional photo and each person’s balance always up to date.
Your credit notebook, on your phone.
Cuaderno de Deudas replaces the paper notebook used by small shops, stores and market stalls. Record customers, credit sales and payments, check balances instantly and close the day without manual math. It works offline and syncs when the connection returns.

What it does
Name, phone, optional photo and each person’s balance always up to date.
Add a credit sale in seconds and record payments without manual math.
How much you lent, collected and still have pending, on one screen.
Periods, movements and debtors. Export your notebook to CSV whenever you want.
Local-first: record entries with no signal and sync when you reconnect.
PIN or fingerprint, photos in private storage, no ads and no data selling.
Collection reminders and WhatsApp messages you prepare, review and send yourself.
The same account across your devices, with sync and separate business data.
Screens
Who it is for
Small shops, minimarkets, market stalls, hardware stores, salons and workshops. Also for personal debts with friends, family or acquaintances.
Cuaderno de Deudas is a record-keeping and organization tool. It is not a financial institution, does not lend money and does not collect debts for you.
Let’s talk
Send me your email and phone model. I will let you know as soon as there is a version ready to install.