Specifically, you are likely looking for the (or a similar latest version) and want to know how to get the exclusive features without paying for them (free).
The core feature of these "12" or "v1.2" overhauls typically involves a comprehensive visual transformation of the game's child NPCs to remove their "cloned" vanilla appearance.
A "Growth Chart" wall item that tracks height and memories.
The search for a "free" version of premium mods can often lead to sketchy sites, but the Se Woo community is largely built on open-source contributions. Here is the safest way to find the legitimate free release: