As a founder you need to learn new things to get things done. But don’t let the perceived ‘hardness’ put you off.
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So you got an email from Apple saying "ITMS-90809: Deprecated API Usage", and they said you were using the deprecated UIWebView APIs. You went away, diligently checked your code for UIWebView
EDIT (19/05/21): this post is now nearly 4 years old - I've changed my method slightly, but this is still valid. Just make sure to use up-to-date versions of