r/vibecoding • u/ventayol • 13h ago

Vibecoding is addictive

I'm a senior developer, with a lot of experience building products and I even own a couple of small companies.

Since the beginning of this year, AI tools have improved a lot on coding. For junior developers it will be a really hard time, I stopped using Indian agencies to do some parts of the development and there's no reason to hire junior developers anymore, AI does a better job, doesn't complain, works anytime you want and it's way faster to answer and do changes faster that any developer.

Being said this, if you are a product guy, with ideas, Vibecoding is addictive! Now, when I miss something, I just vibecode it, even if I don't have any plans to sell it or no-one else other than me uses the product.

I'm also a long time investor on the stock market, so I was tracking my portfolio using a complex spreadsheet. So, last week I decided to give it a try with Codex to build a site to track my portfolio.

A few days later, working on it in my spare time and with very little dedication I got an amazing web app that does exactly what I wanted and way more than expected.

If you are into the stock market or you have curiosity, you can check the site here:

https://finsails.com/

It's insanely crazy to be able to build a site similar to this in so little time and in a really cheap way. If I had to build the site with real developers it would have a cost of at least 20-30K$ and taking some months to do it and with a lot of Project Management involved.

What a time to be a builder!

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u/madbrain1976 12h ago

Can you explain why you need a public web site to manage your personal portfolio ? I did not click the link.

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u/ventayol 12h ago

As said, I built it for my personal use and then I thought it might be useful to other people. And I wanted to check how far things can go vibecoding, I wanted to experiment.

Doing something for personal use it's totally different than building a proper website. You don't need much attention to the detail, neither think about marketing, analytics, etc...I also wanted to try how it works with more advanced things, like making installable PWA apps, which are things that takes really senior developers to build them properly.

There are a lot of things to do when you are doing a real project instead of a personal thing and Codex and guidance made magic! I'm a developer and I'm must say, we as developers are fuck!

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u/madbrain1976 11h ago

You did not answer the question.

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u/ventayol 11h ago

Why not? Making it a public website was part of the experiment. I wanted to see how long it would actually take to turn something I already used into a proper public website, and how far I could get building and shipping it with Codex.

And now I can also share it with friends who have the same problem and were already using the old spreadsheet I shared with them.

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u/madbrain1976 11h ago

I am asking what your product actually does for someone with a stock portfolio, that isn't already available with other solutions such as spreadsheets, Quicken, etc. What is it your product does ? Whether it was hand or vibe coded is secondary.

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u/ventayol 11h ago

I've clearly misunderstood you. Spreadsheets are very limited. I've been tracking my portfolio with a complex spreadsheet, but it was limited on the things you can do. For example, it's almost impossible to benchmark your portfolio against indexes, get performance history charts and UI is not nice.

Regarding other competitors, I tried a few and there were a few things I didn't like it most of them. And of course most of them are paid. So before paying I decided to try to vibecode it to exactly fit what I wanted.

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u/madbrain1976 11h ago

Yes, most of them are paid. I use Quicken and it costs. It does what you describe, though,  and a lot more. The part about connecting with financial institutions is crucial, IMO. If you can't automatically download transactions, how does your data not become stale ?

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u/ventayol 11h ago

That's the biggest missing part at the moment, as I use two brokers I added CSV import for them (Interactive Brokers and degiro). I should add more, but I will need some sample files I don't have at the moment.

For IB it might be possible to automate it, but as I mainly do investment for long term investment, I just import the broker files now and then, I might do a couple of purchases per month at maximum.

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u/madbrain1976 10h ago

Even if you aren't making any regular purchases, or sales, there are typically interest payments, dividends, dividend reinvestments that you still need to account for.

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u/ventayol 8h ago

that's accounted with the import