StopGo app for iPhone and iPad

StopGo is originated from a popular Korean card game Go-Stop (고스톱) played with a deck of cards called Hawtu (화투).
To accumulate points using scoring combinations is the aim of the game StopGo: once gained six points and then call a "Go" or a "Stop". When a "Go" is called, the game continues, and the amount of points is first increased, and then doubled (three Go"), tripled (four "Go") and so on. If a "Stop" is called, the game ends and the winner collects their winnings.

How to play
Step 1. Play begins with eight cards face-up on the table and eleven cards to each players hand. The remaining cards are places face down in center of the table to form a draw pile.
Step 2. A turn begins with a player attempting to match one of the cards lying face-up on the table with a card in their hand. The numbers of two cards must be same. If the player has no cards matching the cards on the table, the player discards a card to the table.
Step 3. The turn continues with the player flipping over the top card from the draw pile and looking for a face-up card on the table. If the player locates a matching card on the table, the player collects both cards along with the cards matched in step 2. Otherwise, the drawn card is added to the table.
Step 4. If the card drawn from the top of the draw pile in step 3 matches the two cards matched in step 2, the three cards remain on the table. The three cards remain until a player collects them using the fourth card of the same number.
Step 5. The object of the game is to create scoring combinations to accumulate points up to a score of six, at which point a "Go" or a "Stop" must be called.

Additional Rules
Any player who has a set of three cards of the same number in their hand can show them to the other players in what is referred to as “shaking” the cards. For each time a player shakes within a single hand, final points are doubled in the event that that player wins the hand.
If a player has as set of three cards of the same number in their hand and the fourth card is located on the table, the player must play all three cards in one turn and collect all four cards. This is also considered to as "shaking" the cards.

Scoring combination
Ace and Numbered cards:
Any set of five cards between Ace and10 (♠A~10 or ♣A~10 or ♥A~10 or ◆A~10) is worth one point and each additional card after five is worth an additional one point.
Ex: ♣ 5 cards=1 point / ♣ 6 cards=2 point / ♣ 7 cards=3 point

Double score for Hearts (♥A~10):
If number of collected numbered cards of Heart exceeds six, total score is doubled

Jack, Queen, King
Any set of six cards of Jack, Queen or King is worth one point and each additional card after six is worth an additional one point.
Jack or Queen or King: total 6 cards=1 point / 7 cards=2 points / 8 cards=3 points

Warning!!
The winners total score is doubled if the opponent has less than four J/Q/K cards in total.

Sequencing numbers: Each set is worth 3 points.
Perfect Number (hearts 7,8,9)
Friend Number(spades 4,6,9)
Product Number (spades 5,7,10)
Rich Number (clubs 1,2,3)

Mission cards
Each game selects a random set of cards called Mission card with different score. Normally mission card multiplies the total score by up to four times. See the right column during the game.

Go score
1"Go" =1 point added to the total score
2"Go" =2 points added to the total score
3"Go" = total score doubled
4"Go" = total score tripled
5"Go" = total score quadrupled

Shake score
1 "Shake" = total score doubled
2 "Shake" = total score quadrupled
3 "Shake" = total score octupled