Privacy
Short version: photos and cards you make stay on your device. The app has no account system and does not upload your pictures.
What stays on the device
Cards, albums, frames and any text you write on a card are stored inside the app on your iPhone. Deleting the app deletes them.
Camera and photo library
The app asks for the camera when you shoot a card and for the photo library when you pick an existing picture. Both are used only for that, and only while you are using the app.
Installation measurement
The app uses AppsFlyer to measure which advertising campaign an install came from. This records technical information about the install and about app opens — device type, system version, and an identifier AppsFlyer generates for the install. It does not include your photos or anything you write in the app.
Tracking permission
On first launch iOS asks whether the app may track you across other companies’ apps and websites. Declining does not limit anything in the app.
Questions
Write to support@mynamecards.org.