One app for three ways to trade Nasdaq futures. Replay any past session by hand and grade the decision before you know the result. Backtest rules with a real quant engine. Or describe a strategy in plain words and let an AI agent write the Python.
Manual. Replay the day, decide before the candle closes.
Step or play 1-minute to daily candles at 0.5x to maximum speed. Place market, limit and stop orders with a draggable stop and target. Nothing after the replay clock is ever shown.
- Write the context and your call before the trade. It is frozen at that clock.
- Long, short, wait or pass are all recorded, so a pass counts.
- Profit curve, expectancy, process versus outcome, and an evaluation-style account with drawdown rules.
Quant. Backtest the rules over years, then step through each trade.
Run rule-based strategies over your whole dataset with a real backtesting engine. Every run is isolated from your journal. Then walk each trade on the chart: before the fill, at the fill, after the exit.
- Prop-firm style accounts with trailing drawdown, so a curve is judged the way a funded account is.
- Slippage and the intrabar ambiguity rule are built in: a bar that touches stop and target is flagged, never guessed.
- Each backtest runs in its own sandbox with no network.
AI Agent. Say the strategy. Get the Python. Test it on your data.
Describe a strategy in plain words. The agent writes it as a complete strategy file against the engine's real interface, runs static checks, tests it on your last 20 trading days in a sandbox, and saves it to Quant.
- Bring your own OpenRouter key. Pick any model it lists. You pay OpenRouter directly.
- AI-written code only ever runs in a network-denied sandbox.
- Vibe-code, backtest, refine, repeat.
- static checks: one Strategy, one Config
- sandbox test: last 20 trading days
- saved to Quant as user strategy
Everything above, one price.
- Candle-by-candle replay trading
- Process journal and analytics
- Quant backtesting engine, sandboxed
- AI Agent that writes strategies
- A private database for your journal alone
- Cancel any time from Billing
What you bring
- Nothing, to start. Complimentary 1-minute history is included for futures (MNQ, NQ, crude oil, gold, silver, micro euro) and stocks (AAPL, NVDA, SOFI).
- Your own market data, if you want more. Upload 1-minute bars from Databento (a .dbn.zst file) or a TradingView chart export (.csv) for any futures symbol or stock.
- Your own OpenRouter key, only if you use the AI Agent on Standard. Jelly AI includes it.
Questions
How do I sign in?
After checkout, a sign-in link is emailed to you. Open it and you are in for 30 days on that device. Ask for a new link any time from the sign-in page.
Can I cancel?
Yes, any time, from Billing inside the app. You keep access until the end of the paid month.
Where does market data come from?
Complimentary futures and stock history is included, ready to replay and backtest. You can also add your own: export 1-minute bars from a TradingView chart or a data provider and upload them in Setup → Market data. A guided walkthrough shows each step.
Is the chart on this page real data?
No. The bars on this page are simulated so the demo can run without a licence. Inside the app you replay real history: the complimentary sets or your own uploads.
Is this financial advice?
No. Jelly Charts is a practice, journaling and research tool. Backtests and replays describe the past and do not predict future results.