I tried two siddurim from the google play store.
I'm looking for one for nusach ashkenaz. (diaspora)..
One test to see if it's right or not wrong(given my requirement) is does it have "shalom rav" for the amidah of weekday mincha. (it should).
I haven't found one in the two I tried.. (they both had sim shalom for weekday mincha) and one was labelled ashkenaz so I guess was maybe Israeli rather than diaspora.
Does anybody have any suggestions?
If it has Shabbat Davening e.g. Shabbat Mincha(which I know is sim shalom) then all the better (though I understand having shabbat or yom tov davening may be unusual on a phone app!)
Preferably free(no cost).