I moved pictures from my stock iOS photos app to an old photo vault app. I used my LTE to move the pictures and was wondering if whenever I opened the app on WiFi, if my school could potentially see all of the images moved there. I can move pictures from my stock photos app to the photo vault while on airplane mode so I don’t believe they are being uploaded anywhere else. I have also deleted the images in question from my phone and all clouds.
The app in question has been removed in the App Store and is pretty old but here’s a link about it: https://appadvice.com/app/secret-calculator-photo-vault-lock-hide-pictures/470578793