User based localization

I am working on an App that will be used by people in the US as well as in South Africa. The date format for the two countries is different and I'd like each group of people to be able to use their own format. I know how to change the formatting for the entire realm and for each individual app, but is there a way to set the localization to where the person is? I'd like the US people to have commas for thousands and the date in the MM-DD-YYYY format, and the people in South Africa to have periods for thousands and the date in the right format 😁.

Any suggestions?

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Edward Hefter
www.Sutubra.com
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