My family played a variation on Oklahoma 10-point Pitch ever since I can remember. This app does a good job of reviving the experience.
There's one annoying bug I encountered when running on my iPhone 5. If you have 10 or more trump cards, the cards in excess of 9 are shoved off the screen. It wouldn't be so bad if the cards were "junk", but in the game I was playing this evening, the Ace was pushed off the screen, meaning I couldn't even complete the hand. The simple fix would be to make sure all non-playable cards are moved to the right side.