How Do I Delete Daily Bible Verse from my iPhone

I have discovered Daily Bible Verse is still on my iPhone after deleting the app from my iPhone. I would like to know how is it that the company still has access to my i. It has access to My mail and Notes. The email account is ****@ minbox.email. The Host Name is *****. The User Name is *****@ minbox.email. The password is unknown. The server is *****. Also,

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