Stick Study Gone?

I got a new phone recently and when I transferred everything over the Sticky Study App had a little cloud on the icon letting me know to download it after moving it to the new device.

On tapping the App, I got an alert that the App was no longer available. When I use the links from the developers website (and other places online) I get a “not available in your area” error.

Does anyone know if this is still available in App stores outside Japan?

Any recommendations for something to replace it? I have tried Anki and Migaku but neither of them appeal to me like Stick Study did.

Thanks for any info / help.

Edit. Dang, first post and I already a typo in the title. Sorry.