Hello there, are there any FOSS Android apps out there that serve as both a reader and a vault for PDFs? I want to be able to encrypt the PDF files and decrypt+read them with a single vault password. I could just encrypt PDF files separately using the same password, but it's not really that convenient having to go through several PDFs tbh. I want to store the PDFs on the storage of my phone. UPDATE: [Safe Space](https://f-droid.org/packages/org.privacymatters.safespace/) is exactly what I needed, ty [@chemicalwonka@discuss.tchncs.de](https://discuss.tchncs.de/u/chemicalwonka), will provide a review of the app later

Some of the LinkedIn Responses are direct and on-point, and also hilariously/depressingly based depending on how you look at it:   EDIT: In hindsight, I think I should've looked into posting this in a different community.. It's closer to a silly "innovation".. soo.. is this considered FUD? I also don't support smoking or vaping, especially among kids. Original title had "privacy-violating" before the "solution".