Two more examples on better accessibility labels for abbreviations. "4 days ago" is better than "4 D", with a RelativeDateTimeFormatter and a spellOut units style. "Monday" is better than "Mon", accessing the weekdaySymbols from a Calendar.
Some useful links:
Relative Date Time Formatter: https://developer.apple.com/documentation/foundation/relativedatetimeformatter
Units Style: https://developer.apple.com/documentation/foundation/relativedatetimeformatter/unitsstyle-swift.enum/spellout
Weekday symbols: https://developer.apple.com/documentation/foundation/calendar/weekdaysymbols
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Good accessibility labels are at the core of good accessible apps. It should be a localized succinct string that tells as much as possible about the component (without including its type) and provides context avoiding verbosity and redundancy.
Since iOS 14, you can get a human readable localised name for a UIColor, with a very useful property called accessibilityName, that you can use in accessibility attributes like labels or values. How cool is that? https://developer.apple.com/documentation/uikit/uicolor/accessibilityname
Support both orientations, if possible. I know not even iOS itself does it, but it hasn't always been like that. You'll create a more robust UI that will be easier to port to iPadOS. And especially, don't force your users to rotate their devices.
