Pink Patience (by Jon Welch, G7JJF) only stores data on its server if you joined the optional leaderboard. Deleting it removes your nickname, all your leaderboard results, your group chat messages, your group memberships and any groups you own. Your games and progress on your phone aren't affected.
If you've uninstalled Pink Patience or lost your phone, contact us via g7jjf.com with the subject "Pink Patience data deletion", and give your Pink Patience nickname and the name of any group you were in. Your data will be deleted within 30 days and you'll get a reply to confirm.
See the privacy policy for what data Pink Patience keeps.