What is One Candle Ahead?

One Candle Ahead is a free trading simulator that lets you practice stock and cryptocurrency trading using real historical market data, one candle at a time. You predict the next move, learn candlestick patterns, and build technical analysis skills without risking real money.

Is One Candle Ahead really free?

Yes. Core gameplay — stock and crypto simulations, leaderboard, candlestick charts — is 100% free. The iOS and Android apps include optional in-app purchases for cosmetic items, but nothing is paywalled.

How do you learn candlestick patterns here?

Every game reveals one candle at a time from a real historical chart. You decide whether to buy, hold, or sell. Over dozens of rounds you internalize the shape of reversals (hammer, engulfing), continuations (marubozu), and indecision (doji) in context — not just from a static chart picture.

What market data does the simulator use?

Real historical OHLCV (open/high/low/close/volume) data for major U.S. stocks (AAPL, MSFT, GOOGL, TSLA, etc.) and top cryptocurrencies (BTC, ETH, SOL). Chart windows are randomized so you can't simply memorize outcomes.

Does One Candle Ahead work on mobile?

Yes. The web app is fully responsive, and native apps are available for iOS (App Store) and Android (Google Play). The mobile apps add 14 achievements, daily challenges, PvP duels, referral rewards, and a seasonal leaderboard.

Will this make me profitable in real trading?

No simulator can guarantee real-market profits. One Candle Ahead trains pattern recognition and disciplined decision-making — two foundations of good trading — but real money involves slippage, fees, news, and emotion. Use it as practice, not a crystal ball.

Do I need an account to play?

No. You can start as a guest. Signing in with Google or Apple saves your balance, leaderboard rank, and achievements across devices.

Paper Trading vs Backtesting: Which Practice Mode Should You Use?

Compare paper trading and backtesting by purpose, strengths, weaknesses, and the best beginner learning sequence.

2026-05-10 · 5 min read · paper-trading, backtesting, practice, comparison

Hero chart image for Paper Trading vs Backtesting: Which Practice Mode Should You Use?

Paper trading and backtesting are often mixed together, but they train different skills. Backtesting studies a rule across past examples. Paper trading practices making decisions under simulated uncertainty.

Backtesting is for rule quality

If you have a new setup idea, backtest it before trusting it. The goal is to see whether the idea survives many historical examples and different market conditions.

Paper trading is for behavior quality

Three-node practice loop: predict the next candle, reveal the outcome, journal the lesson — then repeat.

Backtest the rule, then paper trade the behavior.

A rule can look good in a spreadsheet and still fail when you hesitate, chase, move stops, or overtrade. Paper trading tests whether you can execute the rule in sequence.

Best beginner sequence

First define the setup. Second backtest 30-50 examples. Third paper trade 20-50 live-style reps. Fourth review execution mistakes. Only then decide whether the idea deserves more attention.

Start a practice sequence →