Crossing vs being above
“EMA(9) is greater than EMA(21)” is true for every candle of an uptrend, so a scan using it returns coins that crossed days ago. “EMA(9) crosses above EMA(21)” is true only on the candle where the fast average moves through the slow one. That is the difference between a list of trending coins and a list of new signals.
Common crossover pairs
| Pair | Typical use |
|---|---|
| EMA 9 / EMA 21 | Intraday momentum on 15m–1h |
| EMA 20 / EMA 50 | Swing trend changes on 4h–1d |
| SMA 50 / SMA 200 | The “golden cross” and “death cross” on the daily chart |
| Price / EMA 200 | Price reclaiming or losing its long-term average |
Ready-to-use crossover scans
9/21 EMA cross with trend (Free)
Fast momentum turning up on 15m while the hourly trend is already up. Two conditions on 15m and 1h — works on the free plan.
Golden cross on the daily
The slow, widely watched trend change. Rare on any one coin, but across 900+ perpetuals a few appear most weeks.
Reclaiming the 200 EMA on volume
Price moving back above its long-term average with twice the normal volume — a reclaim with participation behind it.
Death cross short list
Swing trend turning down inside a daily downtrend — the mirror image for shorts.
Crossovers lag by design. Pair them with open interest or volume so you only act on crosses that new money is backing.
Frequently asked questions
Which EMA crossover is best for crypto?
There isn’t one best pair. 9/21 EMA is popular for intraday trading on 15m–1h, 20/50 for swing trades on 4h–daily, and the 50/200 SMA golden cross for long-term trend changes. Adding a higher-timeframe trend filter usually matters more than the exact pair.
Does the scanner catch the cross on the live candle?
By default scans use closed candles, so a cross is confirmed. Premium can also match on the forming candle if you want earlier, less confirmed signals.
Is the EMA crossover scanner free?
EMA, SMA and the crosses above / below operators are free on the 15m and 1h timeframes with up to two conditions. Daily and 4h crosses, more conditions and alerts are part of Premium.