GapX tracks live bid/ask prices across 30 crypto exchanges, including Binance, Bybit, OKX, Coinbase, Kraken, and KuCoin, highlighting the biggest cross-exchange price gaps. Explore the top buy/sell routes and estimate net profit after trading fees, slippage, and withdrawal costs. Filter by minimum spread and the exchanges you use. Free on Android. No sign-up, API keys, or personal data required.