What is current favorite Android/iOS game save solution?

Unity Engine
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1

I used playerprefs.

But is this weak at save file hacking?

What is current mobile phone game’s save solution?

I don’t have plan for make own server and online saving.

Thanks.

2

I think most folks just use a serialiser to write/read data to Application.persistentDataPath.

Options include Unity’s own serialiser, Newtonsoft.JSON, or the Odin Serialiser, among others.

Any data saved onto a device had the potential to be modified. There is no fool-proof method of securing this kind of stuff.