A small window beside League that reads what the client already shows and tells you what actually wins at your rank — while you draft, while you play, and once it is over. Every picture below is the real app, not a drawing of one.

Five champions that win most often in your role at your rank — with the lane you are up against, and the ones you already play, taken into account. They come out in the order our score puts them, but the percentage beside each one is a separate, more cautious figure — so the column will not always read highest to lowest. Do not read the order as a ranking: we have not yet tested whether our first pick beats our fifth, and until we have, the one you know best is the one to take.
How we pick them: we go by the win rate we are most sure of, not the highest one we saw. A champion with a big lead on a handful of games does not jump the queue, and one with too few games to judge is left out entirely. When we have not yet shown the list beats guessing in your exact spot, the app says so on the screen.

It reads the enemy team as it is drafted and says what to change because of it — then gives you your champion’s core build and the order to buy it in.

One line telling you what to buy next, the counter item this particular enemy team calls for, and an honest read on how your lane is actually going.

What turned the game, and the one thing to fix next — ranked by how much it is worth, biggest first, so you are not handed a list of ten things.

All ten players placed 1st to 10th — not against each other, but against how that champion normally does in that role at your rank. A 3/3/10 game can finish first and a 6/6/6 game can finish fifth.
What you get for every player: kills, deaths and assists, share of the team’s kills, farm, damage done, gold earned and vision. Then tabs for gold over the whole game, the timeline of every kill and objective, and your chance of winning minute by minute measured at your own rank. Where a number is not in the data we could get, the column is left out rather than shown blank.
Four things most build sites do not do.
Most advice is measured from the very top of the ladder and handed to everyone. Ours starts at the rank you actually play, because what wins in Iron is not what wins in Master.
Not a fixed build page you look up before you queue. It sees the five champions you are actually against and changes its answer because of them.
When there are not enough games behind an answer, it says so on the screen instead of printing a confident number. Plenty of things we tested got cut for exactly that reason.
It reads what League already puts on your screen and shows advice beside it. It presses no keys, moves no mouse, and changes nothing inside the game.
The companion is finished enough to use every day and is being tested on real games right now. We would rather ship it late than ship it wrong, so there is no date on this page — when it is ready, it goes up here.
Want to know when? Write to [email protected] and we will tell you. Nothing else is done with your address.
In the meantime, the site already carries the same numbers the companion uses.