Is there a bug in the phone app?
I have my review vocabulary settings set to 20 words at a time. When I review a set on the laptop, this reduces the total number of “SRS due” words by 20, which seems logical / correct to me.
However, when I review these words in exactly the same way on my phone, it seems very random how many words this knocks off my “SRS due” list. It seems unrelated to how many I can correctly recall too.