Looking for feedback on a probability-heavy game tool (The Forge Calculator)

Hi everyone,

I’m a solo developer who recently built a fan-made tool for the Roblox game The Forge:
The Forge Calculator

The main goal of the site is to help players:

  • Calculate forging probabilities based on different ore combinations

  • Optimize their inventory for tank/damage builds

  • Preview weapon and armor stats before committing resources

From a web dev perspective, this project has a few interesting challenges:

  • Real-time probability calculations with many different ores and multipliers

  • Keeping the UI clear and readable even when there’s a lot of data on screen

  • Performance on lower-end devices (mobile, older laptops)

I’d really appreciate feedback from other developers on the following:

  1. UX & layout – Is the main calculator interface understandable at first glance? Would you reorganize any sections (probabilities, traits, ore grid)?

  2. Data density – Do you feel there’s too much information on one page? Any suggestions on what could be hidden/expanded or moved to a separate screen?

  3. Onboarding – Is it clear how to start using the calculator (e.g. selecting ores, switching between weapon/armor)? Would a short guided hint / tooltip system be helpful?

  4. Mobile experience – If you test it on a phone or a small screen, is the layout still usable? Any pain points you notice?

I’m not trying to advertise a service – the site is free and just a hobby project – but I’d love to improve it from a web dev / UX point of view.

Any honest feedback or suggestions are very welcome. Thanks in advance!