For those hands with so many combinations that your head hurts!
Tap the Cribb Card first before adding the others
Tap the cribb card first and (optionally) its suit, then add four more cards
Always tap the card followed by its suit (if you wish to enter suits)
Tap "=" to see the score, "x" to delete a card/suit
Hand Breakdown (part 1)
A breakdown of the hand appears at the top on taller iPhones
Suits will be shown only if you entered them
If you did not enter suits, flushes and nobs will not be calculated
Hand Breakdown (part 2)
Tap the "i" button to see a larger breakdown of the score
This method is recommended particularly if you have enabled VoiceOver under Settings > General > Accessibility
The breakdown only can be seen by tapping the "i" button on older iPhones
Entering suits is optional. Here the suit has been entered only for the cribb card and the Jack to calculate "his nob"
Shake to Clear resets the calculator. The accessibility options are designed to minimise the button taps required for VoiceOver users (though others may like this, too), as well as to improve the quality of the score breakdown that is read aloud.
Full Words in Breakdown for better reading with VoiceOver
This option replaces symbols for each suit with words spelled in full.
For example, "Fifteen (Ace of spades, 5 of hearts, 9 of clubs) = 2".