Gas Heatmap
See the cheapest hour to send crypto, across 5 chains
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Gas Heatmap - See the cheapest hour to send crypto, across 5 chains

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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.

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Hey Product Hunt 👋 I built this after one too many times paying way more than I needed to for the same Ethereum transaction, just because of bad timing. GasCheck pulls real fee data daily (Owlracle for EVM chains, btcbench for Bitcoin) and turns it into a simple heatmap — darker squares are cheaper. You can toggle between your local time and UTC. Would love to hear what you think, and what other chains or features would be useful to add next!