The fastest way is in the app: Settings → Account → Delete account. It takes effect right away.
Email support@insidepass.app from the email or phone number on your account with the subject “Delete my account.” We confirm it’s you, then delete within [7] days and email you when it’s done.
Your profile, photos, messages, friends, stories and sign-in details. Payment records are kept only as long as tax law requires, without your name attached.
If you have VIP, cancel it first in your App Store or Google Play subscriptions, or billing will continue through Apple or Google.