League of Legends companion · Windows
Build for the game you're in,
not the average game.
Counterbuild shows per-role meta builds, runes and counter picks, and explains when an item swap makes sense against the team you're actually facing: what you gain, what you give up, and why.
In development · closed beta planned · free tier always available
How it works
Meta builds
Champion and role pages with tier lists, core items, item order and rune pages, computed from aggregated ranked matches.
Counter picks
In champion select, suggestions against your likely lane opponent and both team compositions. Nothing is picked for you.
Explained item choices
A small window can highlight an item decision with options and the mechanical reason behind it. You decide; nothing is bought or applied automatically.
What an item suggestion looks like
Consider: Mortal Reminder · or keep Lord Dominik's Regards
What you gain
+ Grievous Wounds on the enemy team's main healer
+ 300 gold cheaper than the planned item
What you give up
− Some armor penetration against their two tanks
Now or later?
Executioner's Calling (800 g) applies the same effect earlier.
Based only on information visible in your own game. No win rates are shown during a match.
Data & privacy
- Riot Games API: ACCOUNT-V1, SUMMONER-V4, LEAGUE-V4 and MATCH-V5 (matches and timelines) are used on our server to compute aggregate statistics (EUW, ranked solo queue). Only aggregates are published; no individual player data is displayed.
- No player identifiers published: published datasets contain no PUUIDs or Riot IDs.
- On your computer: the desktop app reads the local League client and the local Live Client Data API only on your machine. It does not send your game data anywhere.
- Game integrity: no enemy cooldown or timer tracking, no hidden information, no automation of game decisions. Rune and item-set imports happen only when you click.
- Usage analytics: off by default; optional and opt-in.
- API key: stays on our server and is never shipped in the app.
Contact
Questions about the product or how it uses Riot data: github.com/aturkkan94