A downloadable game.
Layout is clean and straightforward, and the concepts mesh well - the only real gap I see is that CHArisma, which plays a larger role in UVGs assumptions, has no representation.
You'll need a copy of UVG to get your mileage here, and hopefully some PbtA or free roleplay or other 'mixed-outcome' game experience to get in the flow of the game. Nothing is duplicated here, UVG content is page-referenced; the guidance is hands-off.
I think most groups that would go through the trouble of rolling different shaped dice and counting XP would appreciate some concrete mechanics (HP, damage, and so on)... but then again, it's spartan the way World of Dungeons is.
