You don't need Heikin Ashi

Heikin Ashi is a popular trend indicator.
The open values of Heikin Ashi point out the potential trend reverse price level.
However, not all chart services privide Heikin Ashi.
In fact, there is an another way to estimate the open values of Heikin Ashi.
It is SMMA.
William Alligator uses 3 SMMA at a time.
We can set
Offset = 0
Lips = 2
Teeth = 8
Jaw = 32
Lips , also SMMA(2), estimate the open values of Heikin Ashi of the current timeframe.
Teeth and Jaw are the preview of the open values of Heikin Ashi in higher timeframes.