God did not leave the entrances of the city unnamed. He marked them with the names of the tribes, preserved tribal reckoning among the redeemed, and then showed the redeemed entering through those gates. That does not prove more than the text says, but it does make the question unavoidable.
"And had a wall great and high, and had twelve gates, and at the gates twelve angels, and names written thereon, which are the names of the twelve tribes of the children of Israel."
"The names of the twelve tribes of Israel were written on the gates."
God chose to preserve tribal names at the very entrances of the city. The gates are not anonymous and not generic.
"And I heard the number of them which were sealed: and there were sealed an hundred and forty and four thousand of all the tribes of the children of Israel."
Revelation names the tribes one by one. The redeemed are shown in ordered tribal structure rather than an undifferentiated mass.
"Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city."
That gives the explorer its core line of inquiry: tribal names on the gates, tribal reckoning among the redeemed, and entry through those gates.
The gate order is not invented by the app. It is inherited from Scripture and carried into the explorer's directional layouts.
The Tribal Explorer follows that line from Numbers to Revelation so each tribe can be studied as part of the larger order God preserved from the wilderness camp to the New Jerusalem.