Built a couple Bitcoin tools, tips accepted via Lightning:

💰 Fee Estimator — live Bitcoin fee data from mempool.space. Shows current fee rates so you know what to pay.

🐋 Whale Tracker — monitors $62.3B across the 7 largest BTC wallets (Binance, Coinbase, Kraken, etc.): http://5.78.129.127/whales/

🔗 SatsLink — free URL shortener with analytics: http://5.78.129.127/s/

All free, no signup. If you find them useful, Lightning tips to devtoolkit@coinos.io ⚡

What Lightning-native tools would you want to see?