# StackSats > Stack smarter with instant crypto insights ## About Free crypto calculators — DCA backtesting, profit/loss calculator, fear & greed index, portfolio tracker, and crypto converter. CoinGecko data, instant results, dark-mode native. ## Tools ### Crypto DCA Calculator URL: https://crypto.thicket.sh/dca Backtest dollar cost averaging on Bitcoin, Ethereum, and other cryptocurrencies. Compare DCA vs lump sum returns with real CoinGecko historical data. ### Crypto Profit/Loss Calculator URL: https://crypto.thicket.sh/profit Calculate cryptocurrency profit or loss. Enter buy price, sell price, investment amount, and trading fee. Instant results with ROI percentage. ### Crypto Converter URL: https://crypto.thicket.sh/converter Convert between 10 cryptocurrencies and 7 fiat currencies with live CoinGecko prices. Supports BTC, ETH, SOL, ADA, DOGE, DOT, AVAX, LINK, XRP, LTC. ### Fear & Greed Index URL: https://crypto.thicket.sh/fear-greed Real-time crypto Fear & Greed Index with 30-day historical chart. Tracks market sentiment from extreme fear (0) to extreme greed (100). ### Portfolio Tracker URL: https://crypto.thicket.sh/portfolio Track cryptocurrency holdings with live prices. Shows total value, allocation breakdown, and 24-hour price changes. ## Data Sources - CoinGecko API for live and historical cryptocurrency prices - Alternative.me API for Fear & Greed Index data ## API - Structured data: https://crypto.thicket.sh/api/llm - Prices: https://crypto.thicket.sh/api/prices?ids=bitcoin,ethereum&vs=usd - History: https://crypto.thicket.sh/api/history?id=bitcoin&days=365&vs=usd - Fear & Greed: https://crypto.thicket.sh/api/fear-greed?limit=30