Visual recreation of the interface · Sample data
From 30 minutes a day to 3: an optician's invoicing, automated
An optician in the Marina Alta was losing half an hour every afternoon generating and sending invoices. I built a desktop app that does it in seconds.
Every afternoon, half an hour lost on paperwork
The optician's owner was generating between 10 and 15 invoices a day. The process was manual: open a Word template, fill in the customer's details, calculate the VAT, export to PDF, open Gmail, write the email, attach the PDF and send. Multiplied across every customer, that added up to 30 minutes a day that could have gone toward better customer care.
Typos in tax ID numbers, miscalculated amounts, invoices sent to the wrong addresses. Repetitive tasks with room for human error that a computer handles without a single mistake.
A desktop app that automates the entire workflow
I designed a cross-platform desktop application (Mac, Windows, Linux) that centralizes customers, products and invoicing in one place. The data is stored on the optician's own computer, without sending it to the cloud — important, since it includes patients' personal and payment data.
Customer and products
Select the customer from the local database. Add the product from the catalog (glasses, contact lenses, check-ups, accessories).
Invoice generated
The app calculates amounts, VAT and total. It generates the PDF using the template and the optician's tax details. Automatic, sequential numbering.
Email sent
Attaches the PDF to the customer's email, with a customizable message. The customer receives their invoice in under a minute from the end of the appointment.
Time recovered and errors eliminated
How it's built
The app is built with Electron, which lets it be packaged as a native application for Mac, Windows and Linux from a single codebase. The database is local SQLite — no external servers, no monthly hosting fees. Emails are sent through Nodemailer using the optician's own email account. PDFs are generated with PDFKit from customizable templates.
OptiForce
The management CRM for opticians. Invoice, manage customers and products, and forget about paperwork.
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