ok ok
I'm going off of memory here so I might be wrong
For windows I think it's located at (drive letter):\ Users\ (Your user)\ Appdata\ Locallow\ Jundroo\ Simpleplanes
but for android it's found in Android\data\com.Jundroo.Simpleplanes
I dont know the ones for mac or IOS.
I might be wrong on this.

search %appdata%, go to the previous folder, and into localLow

@rexzion idk im looking on my SSD

were