Live example
Settings and defaults
| Setting | Default | Allowed range |
|---|---|---|
| Price source | Close | Open, High, Low, Close, High-low average, Typical price, OHLC average |
| Fast EMA length | 23 | 1 to 500 |
| Slow EMA length | 50 | 1 to 500 |
| Stochastic window | 10 | 2 to 500 |
| Smoothing EMA length | 3 | 1 to 500 |
What it plots
Drawn in its own pane below the price chart, with its own scale.
| Line | Unit | Drawn as | First value |
|---|---|---|---|
| Line | Percent | Line | after 72 candles |
Calculation notes
- Normalizes MACD twice with EMA smoothing after each stage. Values range from 0 to 100. Full windows must warm up; flat windows return 0. EMA length 3 uses a 0.5 weight after its initial average. This is a momentum measure, not a probability.
Questions
What are the default settings of Schaff Trend Cycle (STC)?
The defaults are Price source: Close, Fast EMA length: 23, Slow EMA length: 50, Stochastic window: 10, Smoothing EMA length: 3. You can change every setting on the live chart.
Can I use Schaff Trend Cycle (STC) for free on TraderAI?
Yes. Every indicator in the library can be added to the free live chart. The free plan keeps up to 2 indicators active at the same time; Pro lets you combine more on one chart.
Educational content. Indicators describe past prices; they do not predict future prices and are not investment advice.