See the signal.
See the reasoning.
Cairn turns a simulated candlestick chart into a plain-language buy, hold, or sell reading — with the exact averages and momentum reading behind it shown in the open. Save what you’re watching and pick up right where you left off.
Built for learning market structure — not a broker. Data is simulated, signals are educational, and Cairn never places trades or promises returns.
AAPL
Apple Inc.
The 9-bar average (216.10) is running above the 21-bar average (212.33) and RSI-14 sits at 66, a neutral-to-firm reading. Together that pattern has historically lined up with short-term upward momentum in this simulated series.
How it works
A workflow built around understanding, not signals-for-signals’-sake.
Pick a market and timeframe
Choose from equities, crypto, FX, and indices across five timeframes — from 15-minute bars to weekly.
Read the transparent rationale
Every buy, hold, or sell state comes with the moving averages and momentum reading that produced it — in plain language.
Save what you're tracking
Bookmark an analysis to your watchlist so it's waiting for you the next time you sign in — on any device.
Stay in control
Cairn never places trades, connects to a broker, or touches your money. You decide what, if anything, to do next.
Signal states
Three states. Zero mystery math.
Every reading comes from a 9/21-bar moving-average crossover checked against a 14-period RSI momentum reading — publicly documented technical-analysis concepts, not a proprietary black box. Cairn always shows the numbers behind the label.
Short-term average leads
The 9-bar average is running above the 21-bar average alongside a firm-but-not-extreme momentum reading — a pattern that has historically lined up with upward moves in the simulated series.
No clear edge yet
The two averages are close together and momentum is middling. Cairn labels this a wait-and-watch state instead of forcing a direction that isn't really there.
Short-term average lags
The 9-bar average has slipped below the 21-bar average while momentum cools — a combination that points to downward pressure in the simulated series.
Supported markets
Four asset classes, five timeframes.
Every market below is simulated for learning — useful for practicing how to read a chart and a signal together, without any of it being a live order book.
Equities
- AAPLApple Inc.
- MSFTMicrosoft Corp.
- TSLATesla Inc.
- NVDANVIDIA Corp.
Crypto
- BTC/USDBitcoin
- ETH/USDEthereum
FX
- EUR/USDEuro / US Dollar
- GBP/USDBritish Pound / US Dollar
Indices
- SPXS&P 500 Index
- NDXNasdaq-100 Index
Set expectations
What Cairn is — and isn't.
Cairn is
- An educational tool for reading charts and transparent signal logic.
- Powered by simulated, clearly-labelled candlestick data.
- A place to save markets you're studying and return to them later.
Cairn is not
- A broker, exchange, or investment adviser.
- Connected to real brokerage accounts, bank accounts, or live order execution.
- A source of personalized financial advice or a promise of profit.
[1] Market data displayed throughout Cairn is generated by a deterministic simulation for educational use and does not reflect real-time or historical prices from any exchange or data vendor.
[2] Signal states are produced by a disclosed, rules-based reading of that simulated data (moving-average crossover plus RSI-14). They are general educational content, not individualized investment advice, and past patterns in simulated data do not predict future results in real markets.
Start reading markets with the reasoning attached.
Free to create. No card required. No live trading, ever.