FAQ

Can I get banned on Steam?

No. The app only parses open data and doesn't require your account.

How does it work?

First step is to get wear values from Steam marketplace. Next step is to try all combinations possible.
The main reason why this works is this formula:

OutputWear = (MaximumOutcomeWear - MinimumOutcomeWear) * AverageInputWear + MinimumOutcomeWear

So everything you need to know is average float of your ingridients, and wear range of skin you want to craft.

I haven't got the float I wanted

The main thing you have to know is that floats in CS:GO can't be very precise. They use IEEE754 32-bit floating point format.
This means there is a limit of how precise floats can be. But also makes some round floats like 0.25, 0.5, 0.75 and more.

For the reason why it sometimes misscalculates those numbers is simple:
No one actually knows how CS:GO makes floats from contracts. We only know the math. So there are always would be a chance to get a float that is not exactly what you want.