Logbook is a read-only app for your Alpaca brokerage account. It pairs every buy and sell into a closed trade with its profit, shows open positions with the day you got in, and puts deposits and dividends beside your trades, with a check that your balance adds up. Export your trades as CSV. Charts, per-symbol results and a Home Screen widget. Paper and live accounts side by side. It cannot place an order, needs no account, and your keys never leave your device. iPhone, iPad and Android.