What it does
Built for the last 10%
Tracking what you've unlocked is the easy part. Perfect is for what's left: the missable, the add-on you didn't know you needed, the one only half a percent of players have.
On the game page
Missables, ticked off
Where a published roadmap names the achievements you can lock yourself out of, Perfect lists them — and counts them down as you get them. "2 missable · 1 left."
Every count
Counted like Steam
Steam's own achievement sets: retired achievements and add-ons you don't own leave 100% the way they do on Steam, so your numbers match your profile.
On the game page
What 100% costs
Every add-on a game's 100% needs, how many achievements each holds and today's price — and a notification the day one goes on sale.
From published guides
Roadmaps, cited
Difficulty, hours to 100% and a link straight to each achievement's entry in a published guide — never a guess, always the source.
Lock Screen & alerts
While you play
A Live Activity on the Lock Screen with your count, your last unlock and any missables still to get. Unlock alerts for the rare ones — or the ones you're tracking.
Friends
Your friends, ranked
Standings across every friend Steam lets you compare with: achievements, perfect games, average completion — and what they unlocked this week.
