I'll keep this simple.
I'm Andrew Henderson, the app developer. I won't share your data with anyone.
The only cookies Tech Genie stores are for remaining logged into the app. That's so you don't have to keep re-entering your password.
If you decide you don't want to use the app anymore, tap the "Support" button in the app's Settings screen.
This will open your email client. Send me an email asking for me to delete your account. I'll personally delete it along with all your data.
If you have any other questions, please contact support through the app.