Strategies vs Indicators in Pine Script

If you’ve just opened the Pine Editor, you’ve probably noticed two kinds of scripts — Indicators and Strategies. They look almost identical, but they serve completely different purposes.

In this article, you’ll learn:

• What an Indicator is
• What a Strategy is
• When to use each one
• How to write both.

Let’s get started.

The first decision you’ll make is:

Do I want to visualize data or test a trading system?

The answer determines whether you create an Indicator or a Strategy.

Think of It Like This

Imagine you’re driving a car.

Indicator = Dashboard

The dashboard tells you:

• Current speed
• Fuel level
• Engine temperature

It gives information.

It never drives the car.

Strategy = Driving Simulator

A simulator doesn’t just display speed.

It actually:

• Accelerates
• Brakes
• Changes gears
• Calculates fuel usage
• Shows total distance

Likewise, a Strategy actually simulates trades.

What is an Indicator?

An Indicator performs calculations and displays results on the chart.

Examples include:

• Moving Average
• RSI
• MACD
• Bollinger Bands
• VWAP

Indicators answer questions like:

• Is price trending?
• Is RSI overbought?
• Where is support?
• Has volatility increased?

Indicators never place trades.

They simply provide information.

Your First Indicator

Every Pine indicator begins with:

//@version=6
indicator("Simple Moving Average", overlay=true)
length = input.int(20)
ma = ta.sma(close, length)
plot(ma, color=color.blue, linewidth=2)

What happens here?

• Creates an indicator
• Calculates a 20-period SMA
• Draws it on the chart

What is a Strategy?

A Strategy is designed to simulate trading decisions.

Instead of only showing information, it can:

• Enter trades
• Exit trades
• Calculate profit
• Calculate losses
• Show win rate
• Backtest years of historical data

Strategies answer a different question:

Would this trading idea have actually made money?

Your First Strategy

Replace indicator() with strategy().

//@version=6
strategy("Simple SMA Strategy", overlay=true)
fast = ta.sma(close,20)
slow = ta.sma(close,50)
plot(fast)
plot(slow)
if ta.crossover(fast, slow)
    strategy.entry("Buy", strategy.long)
if ta.crossunder(fast, slow)
    strategy.close("Buy")

Now something completely different happens.

TradingView starts simulating trades.

Open the Strategy Tester, and you’ll see:

• Net Profit
• Win Rate
• Number of Trades
• Drawdown
• Equity Curve

This is impossible with an Indicator.

The Biggest Difference

An Indicator can only observe the market.

A Strategy can act on the market (in a simulated environment).

Think of it this way:

Indicator:

The price crossed above the moving average.

Strategy:

Buy because the price crossed above the moving average.

One informs.

One makes decisions.

Which One Should You Learn First?

Start with Indicators.

Why?

Because they teach you:

• Variables
• Calculations
• Functions
• Plotting
• Conditions

Once you’re comfortable, move on to Strategies.

Strategies build on the same concepts while introducing:

• Orders
• Position management
• Risk control
• Performance metrics

Learning Indicators first makes the transition to Strategies much easier.

Final Thoughts

Many beginners believe they need a Strategy to display a moving average or an RSI.

They don’t.

Likewise, many try to backtest an Indicator and wonder why nothing happens.

Remember this simple rule:

Indicators analyze. Strategies evaluate.

Master Indicators first, then learn Strategies to test whether your ideas actually work in the market.