The app, step by step. The rules are on their own page; this is what you'll see and what to tap.
Someone deals a game and picks Whist on New game — four seats, two pairs; a computer takes any seat nobody fills. Say Deal me in.
The strip at the top says which suit is trumps this hand, and the line under the heading names the turned card until the first trick is taken.
Cards you can't play sit dim — follow the suit led if you can. Tap a card, then Play. The trick builds in the middle, and the taker's card gets a gold ring.
After thirteen tricks the pair that took more than six scores a point for each trick over. Scores on the strip opens every hand so far. First pair to five wins.