“Half the group is following their own app.”

One tour, one link, one app. Everyone rides the route you built, the twisty one, not whatever their satnav negotiated them down to.

“A road closes and now there are six different detours.”

Same app, same routing brain. When the group reroutes, everyone's phone agrees on where to go. One detour, not a debate at a junction.

“Sharing the plan means PDFs, screenshots and a group chat nobody reads.”

Everything lives in one place: routes, stops, hotels, numbers, notes. You edit, their phones update. No reprints, no checking the chat.