I know there’s AnkiDesktop, web, AnkiMobile, and AnkiDroid, for desktop, iPhone, and Android.
I started with AnkiDroid, without creating an account at first. On AnkiDroid, without an account, without backing anything up, I made four cards.
Then I went to my desktop, and downloaded the Windows installer, installed it, and was asked in the setup to choose web or droid… so I chose Droid.
On my Andriod, I’m now finding the four cards I’d made are gone, although there appears to be a theme that claims it’s being applied to two decks. Unfortunately, though, it appears as though only one deck name is displayed.
It’s convoluted, it’s hard to explain clearly, but are those four cards gone?