Best automated stock app that automatically trades 24 hours a day?

**Quick take:** No single “set-and-forget” phone app can trade every listed U.S. stock literally 24 × 7, because U.S. equity exchanges are only open 5 days a week (regular session + pre/post-market). However, you can get very close by combining:
1) a broker that offers extended-hours equity trading, and
2) an API or “strategy marketplace” where algorithms run automatically—even while you sleep. 🤖🌙

Below is a tiered rundown so you can choose the level of control (and coding) you’re comfortable with.

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### 1. Turn-key “marketplace” platforms
| App / Broker | What trades? | 24 h coverage | No-code? | Key points |
|--------------|--------------|--------------|----------|------------|
| Capitalise.ai (partners w/ Interactive Brokers, Alpaca) | Stocks, ETFs, options, crypto | Crypto is 24/7; equities trade 4 am–8 pm ET (IBKR) | Yes (natural-language rules) | Write rules like “If AAPL drops 2 % and RSI < 30 then buy.” Good for non-coders. |
| TradeStation “Strategy Network” | Stocks, futures, options, crypto | Futures & crypto run 24/7; stocks 4 am–8 pm ET | Mostly no-code | Library of pre-built strategies; can subscribe for a fee. |
| SignalStack (Plug-in for TradingView, TrendSpider) | Whatever your broker supports | Depends on broker; crypto 24/7 | Yes (webhooks) | Turns any TradingView alert into a live order—no server maintenance. |

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### 2. DIY API brokers (maximum flexibility)
| Broker API | Typical markets | 24 h reach | Coding needed | Why consider? |
|------------|----------------|-----------|---------------|---------------|
| Interactive Brokers (IBKR) | ~150 markets incl. stocks, futures, forex, crypto ETNs | Futures & forex trade 24 h; stocks till 8 pm ET | Moderate (Python, Java, C++) | Lowest commissions; rock-solid execution. |
| Alpaca | U.S. stocks, crypto | Crypto 24/7; stocks 4 am–8 pm ET | Easy (REST + Python SDK) | Zero-commission; ideal for cloud bots; fractional shares. |
| Tradier | U.S. stocks & options | Stocks 4 am–8 pm ET | Easy (REST) | Lets you bolt on third-party algo tools like QuantConnect. |

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### 3. “Robo-advisor on steroids”
| Service | Asset mix | Automation scope | 24 h effect | Notes |
|---------|-----------|------------------|-------------|-------|
| Wealthfront / Betterment | ETFs | Portfolio rebalancing—not intra-day trading | NAV priced once daily | Good for passive investors; not real-time trading. |
| Composer | ETFs, single stocks | Drag-and-drop logic; trades once per day | ⚠ Not 24 h | Great for strategy tinkering without code, but not for 24-hour scalping. |

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### Practical tips before you flip the switch 🛑
1. **Back-test relentlessly.** Anything that runs 24/7 needs stress-tests across news shocks, flash crashes, and low-liquidity hours.
2. **Use “circuit breakers.”** Hard-coded max-loss or daily-stop functions keep small bugs from becoming large disasters.
3. **Start cash-only or paper-trade.** Every reputable broker offers a sandbox—use it until the strategy’s Sharpe ratio and slippage look solid.
4. **Mind overnight liquidity.** Pre-market and after-hours spreads can be 3–5× wider; limit orders are your friend.
5. **Reg-T and margin.** Automated systems can churn positions quickly—ensure you won’t trigger a pattern-day-trader (PDT) call unintentionally.

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### How to get rolling in 15 minutes 🔧
1. Open a free **Alpaca** account (no minimum).
2. Clone their sample Python bot from GitHub—takes less than 30 lines to place a limit order based on RSI.
3. Deploy on a cheap VPS (≈ $5/month) or use GitHub Actions for a fully cloud-hosted loop.
4. Flip the switch with small position sizes; audit logs daily.

Need help screening stocks or technical signals to feed your bot? I can pull live data and code the back-test for you—just say the word. 📊

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*One more thing:* You haven’t shared your **Investment Objective** yet (growth, income, or a blend). Knowing that will help me suggest algo settings—e.g., momentum vs. mean-reversion. Care to fill me in? 😊