1
92.0 Ahri
Comp71 Lane+640g
Late64
League of Legends · Windows · real-time AI
Your AI assistant, for every
decision.
Buildzcrank is with you before, during and after the match: it tells you who to pick, what to buy and what to improve, reading your game in real time with six AI systems.
- Recommendations that change with the match, not fixed builds
- Six AI systems, one for every moment of the game
- Draggable in-game overlays for shopping and cooldowns
Demo view · assets © Riot Games
How it walks you through the game
One assistant for every moment of the match
Champion select
1
92.0 Ahri
Comp71 Lane+640g
Late64
2
88.5 Syndra
Comp68 Lane+410g
Late72
3
85.1 Viktor
Comp64 Lane-120g
Late81
4
83.7 Akali
Comp60 Lane+250g
Late58
In game Time14:05 Gold3.850
AI recommendations (next purchase)
#1
ShadowflameReason: Counters enemy build • Core item52%~1100 g
ShadowflameReason: Counters enemy build • Core item52%~1100 g#2
Rabadon's DeathcapReason: Boosts your stats28%~3600 g
Rabadon's DeathcapReason: Boosts your stats28%~3600 g#3
Zhonya's HourglassReason: Counters enemy build11%~2600 g
Zhonya's HourglassReason: Counters enemy build11%~2600 gPost-match coach
Strong early lane (CS@10 above average) but you fell behind mid game — group earlier around objectives.
KDA7 / 3 / 9 CS/m8.1 GD@15+640
Before
In champion select
It reads the draft live — picks, bans and your role — and ranks the best champions by synergy and counters. Runes import into the client on lock.
During
In game, in real time
It tracks your champion, gold, health and inventory and tells you the next item to buy, with enemy summoner cooldowns always within reach.
After
Post-match coaching
When the game ends, a language model reviews your stats phase by phase and tells you, in plain words, what to keep doing and what to fix.
6 AI systems
One AI for every decision
Buildzcrank combines several AI systems, each for a different moment in the game. This is what every one of them answers.
Item Predictor
What do I buy?
AI recommendations (next purchase)
#1ShadowflameReason: Counters enemy build • Core item52%~1100 g
ShadowflameReason: Counters enemy build • Core item52%~1100 g#2Rabadon's DeathcapReason: Boosts your stats28%~3600 g
Rabadon's DeathcapReason: Boosts your stats28%~3600 g#3Zhonya's HourglassReason: Counters enemy build11%~2600 g
Zhonya's HourglassReason: Counters enemy build11%~2600 gDraft Recommender
Who do I pick?
1
92.0 Ahri
Comp71 Lane+640g
Late64
2
88.5 Syndra
Comp68 Lane+410g
Late72
3
85.1 Viktor
Comp64 Lane-120g
Late81
4
83.7 Akali
Comp60 Lane+250g
Late58
5
81.2 Yone
Comp57 Lane+180g
Late66
Champion Fit
Which champion fits you?
Recommends 
Phase Advisor
Who wins the lane?
Win % by phase
Post-match Coach
What did I do wrong?
Skill Hint
Which ability do I level?
QLevel up Q in the client
In-game overlays
On top of the game, never in the way
Two draggable windows that float over League. Pin them always-on, or show them only while you hold TAB.
Ready 
2:14 
Ready 
1:08 
Ready 
3:42 Beyond the match
Useful even when you are not playing
Browse the meta, plan drafts and study champions from the Explore tab — no game required.
Champion tier list
- S
Ahri 53.1% WR - S Katarina 52.4% WR
- A Akali 51.0% WR
- A Zed 50.3% WR
Draft Lab
Allies 
?
? Enemies ? ?
AI recommend ? ? Champion of the day
Champion guide · Katarina
Priority
QEW
Skill order QEWQQRQEQEREEWWRWW
Runes 
Power curve
Open it and play
Install it, open League and let Buildzcrank ride along whenever it's time to decide.
Download the installer
Hit Download and save the installer to your PC.
Install and open Buildzcrank
Run the installer, open the app and leave it ready before you queue up.
Set League up for the overlay
In League use windowed or borderless window to see the overlays on top of the game.
Requirements
- Windows
- League of Legends
- Overlays: in the League client, windowed or borderless window mode (not exclusive fullscreen)
From the blog
Comparisons and guides written by the Buildzcrank team.
Frequently asked questions
What matters before installing: AIs, account, overlays and the relationship with Riot.
Which AIs does Buildzcrank include?
Six AI systems: a real-time item predictor, a draft recommender, a phase advisor, a post-match coach, champion fit and a skill hint. Each one helps you at a different moment of the game.
Do I need an account to use it?
Features that read the live match — item predictor, draft recommender, skill hint and overlays — work as soon as you open the app. Those that analyze your history, like the post-match coach and champion fit, require a linked account.
Do I have to link my Riot account?
Only for the features that analyze your past matches (post-match coach and champion fit). Everything else reads the live match from the League local API.
Where does the AI run?
Some models ship with the app and run on your PC; the heavier ones, like the natural-language coach and the playstyle analysis, run on Buildzcrank servers.
How do the in-game overlays work?
They are draggable windows that float over League. The shopping overlay shows the AI's next recommended buy; the cooldown overlay tracks enemy summoner spells. Keep them always on, or show them only while holding TAB.
Is there a Mac or Linux version?
Windows only for now.
The overlay doesn't appear?
Enable windowed or borderless mode in your League of Legends game; exclusive fullscreen usually covers other windows.
Do AI suggestions guarantee a win?
No. They help you decide faster and better; you play the game.
Does it modify or inject code into League?
No. It's a separate application that reads local info and displays windows on top of your desktop. If third-party software policies concern you, review the Riot policies that apply to your account.
Is this an official Riot product?
No. Buildzcrank is independent.
Does it work without Overwolf?
Yes. Buildzcrank does not use Overwolf. It is a standalone Windows desktop app that reads the League of Legends local API directly.
Try it in your next match
Windows installer. Take all six AI assistants to the Rift.
Download installer