Following v8.21 ported to Android less than two months ago by Jim Ablett, now it's the recent version of Jazz coming from Jim Ablett.
Jazz is not particularly a top engine but it was good and functional enough to be selected for TCEC events. Besides, its programmer Evert Glebeek from Netherlands, is highly addicted to alternative chess variants. The outcome is colorful with engines such as Jazz, Leonidas and Sjaak, all present in my preivous and current test experiments.
You may download Jazz 8.21.JA: HERE