loweef returns part of the trading fees crypto futures traders pay, daily in USDT. Link your exchange UID - no deposit, no API keys, funds stay on the exchange. Works with AlphaX, BingX, MEXC and OKX (up to 65%, higher in the first 2 weeks). Also free: a payback calculator and the Crypto Futures Fee Index - VIP 0 taker/maker fees for 8 exchanges with check dates, official sources and a CSV download.