Good idea, poor execution. The most glaring problem is the “sync” feature, which is not synchronization at all. You must manually go to settings and either choose to upload or download data. Both options replace all data, so if you download, any local changes are lost. If you upload, any changes on other devices or in the cloud that have not been downloaded are lost. Better to have nothing at all, the way it is implemented now is a recipe for data loss.
A massive omission is the inability to add visited places (cities, etc) instead of just regions.
Then there is an array of quirks. The choice of map projection is quite odd (Greenland is NOT larger than South America, it’s only about 1/4 the size of Brazil). Some region maps are oddly selected - too coarse or missing in some, too fine in others (98 in Denmark vs only 22 for France), simply bizarre for others (why use out of date administration boundaries for France, which no one uses, vs historical regions or modern departments, which everyone knows?). User interface is clunky. Region maps can’t be zoomed much, and there is no extra data (roads, cities) on the map to help you figure out which of the bizarre regions you’ve been to.
