GasCheck maps average transaction fees by day-of-week x hour-of-day for Bitcoin, Ethereum, BNB Chain, Arbitrum, and Base — see at a glance when fees are cheapest, instead of guessing.
Each cell shows the fee rate and what a standard transfer actually costs in USD. Bitcoin fees swing 3-5x in a single day, so timing it right can save real money. L2s like Arbitrum and Base stay flat almost all the time — GasCheck shows that honestly too.
No signup, no wallet connection — just open it and check.
