Always been a little buggy. I used to receive "Must play a card from your hand" error message a LOT for no reason. Now it crashes all the time. Restarting my phone did not fix the issue.
The gameplay is generally good. After a long wait, the card graphics were finally updated - they didnt look very good on the iPhone 4s retina display. The new pictures are just a little hard to see. In my experience, the AI is not bad, but sometimes you just get unlucky deals...
"Last Trick" and "Last Hand" screens are helpful for reviewing what just happened.
HeartMyiPhone about Euchre!