Computo

Computo is a web service that monitors US stocks and ETFs and sends email alerts when a chosen condition is met. Users select a ticker, set a price target, a percentage swing, or a ratio between two symbols, and Computo watches the market and emails the moment the condition triggers. The service does not connect to any brokerage account; it is read‑only and aggregates alerts across any broker you use. Alerts cover price targets, percentage moves, cross‑asset ratio alerts, and calendar events such as earnings or ex‑dividend dates. Each trigger generates a single email with built‑in cooldowns to prevent spam. A 14‑day free trial provides full Pro access, including unlimited alerts, unlimited watchlist, personal notes, and a daily earnings/ex‑dividend digest. After the trial, the service costs $5 per month or $50 per year, and no credit card is required to start. Additional tools include an average‑down calculator, and users can organize positions by brokerage account with live portfolio totals.