I couldn’t find Eternity through the search feature of the Google Play Store, but your comment pushed me to look for it better via Google search. Here it is.
I’ll test it in the next few days. I haven’t found a simple app that works for me yet (but maybe this time it’s a charm). I use Jerboa, Liftoff and Connect for different features, because none of them has them all (and I didn’t fall in love with Sync)