This is a pretty interesting tool. I only checked out their preloaded test simulations, and the same rules apply for entering any of your personal transaction data into a website: don't. But...the concept is cool:

It sure could use a little explainer or something, but what I think it is doing is taking VTXO json data (or something called a V-PACK, which I assume can be exported from an Ark wallet) and helping show you where it sits in an Ark and what your path back to the main chain looks like.

They have some preloaded data to show you how it works, but it looks like you can upload signet, testnet, or mainnet data to do your own experimentation.

It's neat to see this visualized, because it helps to think through how long it actually takes to exit an ark in the case of a unilateral exit or what the relationship is between your VTXOs and a mainchain UTXO.