Cross 21
Cross 21 Summary
Cross 21 is a free, ad-supported, with in-app purchases iOS app in Board by Vweeter Limited. Released in Aug 2017 (9 years ago). It has 1.00 ratings with a 4.00★ (good) average. Based on AppGoblin estimates, it reaches roughly 2.00 monthly active users and generates around $<10K monthly revenue (27% IAP / 73% ads). Store last updated Jun 22, 2026
Cross 21 SDKs Summary
App not yet scanned for SDKs.
4★
Ratings: 1.00
Screenshots
App Description
Want to play blackjack 1 vs 1 with people from all over the world?
No dealers! Only you and your new random friends.
Take turns to place the cards on the crossword board.
Try to make the cards add up to 21 points just like normal blackjack.
But you can combine cards vertically or horizontally as long as the cards you place don't exceed 21 points per turn.
Usual rules: Ace can be 1 or 11 , JQK are 10 points.
You just gotta link them either in a straight line.
Daily / Weekly leaderboards so you can compete with people all around the world.
Chat room function for you to make new friends.