I loved it!!! super fun, chill, really awesome incremental.
A few notes though:
1) The pointer over the upgrades is centered on the middle of the hand instead of the tip of the finger, which leads to awkward controls when trying to close/drag upgrades.
2) The pinned tab... well, it's pinned, great, there's even a tutorial page explaining how it works, but every time I open up the laptop, instead of the pinned tab it opens the upgrades tab, so I'm mostly focused on upgrading gold or silver, but even if I pinned them it always opens the upgrade tabs, which is a bit annoying and it's an extra click every time I need to upgrade. If the pinned tab is not empty, it should always open by default.
3) The button animation when trying to upgrade sometimes doesn't respond correctly, it's a bit unreliable. Sometimes I have to click like 3 times to really upgrade. I'd remove the animation or make it work no matter the animation. The animation is a cool feature but if it makes the button not work, it's not worth it.
4) a few upgrades, like mercury cascade, or gold jackpot, read "next 0,0 (0,0 -> 0,0) which is confusing and I don't know if it's a UI problem or they really don't work.
If I find something more I'll post it here, super fun game, well done!