Your uploaded hands sit in your own FlopHero account.
Who can see your hands
Once you sign in, your uploaded sessions appear under Sessions, with each hand listed inside. This hub does not set access rules: the Terms and the Privacy Policy linked on the sign-in screen are the documents that cover what happens to your data. If they do not answer your question, contact support.
Is your data shared or sold
The upload window, where you bring your hands in, carries one line: "We never share your data with third parties". That line is the whole of what the app states here. Contact support for anything it does not cover, like how your data is stored, whether it is ever sold, and your rights over it.
Downloading or deleting your data
The Account Settings page has no option to download or delete your data yourself. To request account or data deletion, contact support.