Built a simple tool to calculate days between dates (looking for feedback)

Hey everyone 👋

I’ve been working on a small project to solve a very common but surprisingly tricky problem calculating the number of days between two dates accurately.

At first, it seemed simple, but things get complicated quickly when you consider:

- Different month lengths

- Leap years

- Working days vs calendar days

I noticed that many people rely on spreadsheets or manual calculations, which can be time-consuming for quick checks.

So I built a simple ferramenta Calculadora de Dias focused on making these calculations fast and straightforward, especially for everyday use cases like planning, deadlines, or tracking durations.

I’d really appreciate your feedback:

- Do you usually use Excel, scripts, or online tools for this?

- What features would you expect in a date calculator?

Thanks a lot 🙌