Is there a way, besides writing in ios and android, to securely store data in the common without external libraries? A friend of mine said something about storing in secrets but when googling it I didn’t found anything

Don't know specifically without external libraries. This might be of some help though and more specifically the platform specific counterparts for the drivers are: • Android • iOS However this is using external libraries (SQLDelight, SQLCipher for android). iOS supports sqlite encryption extensions as seen at this post.

That’s exactly what I was looking for