Theo watches. You decide.

HeyTheo is an AI co-pilot for self-directed investors and swing traders in US markets. Theo watches the stocks you own and the ones you are considering, flags rule-based setups where the trigger is always visible, and answers questions about any US-listed stock in plain English with sources attached. You can test any strategy against years of history before you rely on it. HeyTheo is a research and education tool, not a broker and not a financial adviser. It helps you decide; you trade in your own account.

No. HeyTheo is a research and education tool, not a financial adviser or a stock broker, and it never issues a buy, sell or hold call. It shows you the rule behind each trigger, the data and the reasoning, the bull case, the bear case and the risk, so you can reach your own view. Every decision and every trade is yours, made through your own broker. For guidance specific to your situation, consider consulting a licensed financial professional.

HeyTheo answers stock questions in a chat like ChatGPT, but with three differences that matter for money decisions: every setup is rule-based and shows its trigger, every strategy can be tested against history, and every claim is tied to a source you can check. A general chatbot can produce a fluent summary you have to trust. HeyTheo is built so you can verify it: see the rule, test it and trace the data, instead of taking a generated answer on faith.

An alert means something on your list needs a look, and it tells you what. For a stock you are considering, Theo alerts you when it reaches a rule-based entry zone. For a stock you own, Theo tracks a protection level beneath the position that rises as the stock climbs and never falls, and tells you when that number changes, so you never have to keep checking. Theo also tells you when a stock on your list moves. Tap the alert and Theo chat opens with the question already asked, so the reason is one tap away. Acting on it is always your call.

Backtesting runs a strategy against historical data and a benchmark so you can see how its rules would have behaved in the past before you act on them. It is how you judge a method instead of taking it on faith. The results are hypothetical: they reflect a rule applied to past data, do not account for all real-world costs, and cannot guarantee future performance. Treat a backtest as a way to understand a strategy's behaviour and limitations, not as a promise of what will happen next.

Yes. HeyTheo's Basic plan is free, with no card and no time limit. It includes Theo chat, a watchlist with alerts and protection levels, daily market data and a monthly allowance of backtests. Paid plans add strategies, baskets and idea generators of your own, finer market data, more history and more room to build. Every plan's price and limits are on the pricing page, read live from the store, so the page cannot promise something the app does not deliver.

No. HeyTheo does not need access to your brokerage account. You add the stocks you own or are watching yourself, or just ask Theo in the chat to add them, and on Pro and above you can also add them from an AI app such as ChatGPT or Claude. Theo watches them from there, and every trade stays in your own account, made through your own broker.

Market data comes from licensed third-party providers and public company filings, and may be delayed. Every figure on an asset page carries the time it was last updated. Theo's answers cite the filings, news and data behind them, so you can check the source yourself rather than take the answer on trust.

HeyTheo includes rule-based strategies such as Golden Cross, RSI Oversold Bounce, Pullback, Mean Reversion and 52-week Breakout, and it draws on common technical indicators like MACD and Bollinger Bands. On a paid plan you can also define rules of your own. Every strategy shows its exact trigger conditions up front, there is no hidden logic, and each one can be backtested against a benchmark before you use it. A strategy describes how a rule behaves; it is not advice to buy or sell.