I developed and launched this project with the mindset of building a product, and I am still doing it by maintaining it, fixing bugs, and improving it.
When you're a first-time founder/maker, and you're the only person using your own product, you probably overlook important things. That's why you need to test the product with as many people as possible.
The problem is that time is limited. You have to decide not only how many people will test it, but also who those people should be.
