LilMoon

LilMoon puts the Bitcoin price, latest block and mempool fees on your Mac desktop and in your menu bar, so you just glance instead of opening a tab. Price with 24h change and sparkline, block height and age, fees in sat/vB and fiat, next retarget and halving. Twelve retro looks, full restyling, and alerts on price, daily move or fees. $2.99 once on the Mac App Store.