LoL Catalyst: Builds for LoL

Contains adsIn-app purchases
4.7
59.2K reviews
1M+
Downloads
Content rating
Teen
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About this app

The ultimate companion app for League of Legends players.

LOL BUILDS
Quickly get the best builds for any champion. See builds from several sources so you can always find a build you like. A recommended build is shown for each champion for your convenience.

TOOLS
Access dozens of LoL related tools such as a full fledged game encyclopedia, bans helper and summoner lookup (check the full feature list below).

LOLESPORTS
Always up to date game schedule for professional matches from every region. View game results, highlights or full games or check how your favorite teams are doing in the standings.

TFT
Pick your desired traits or a few champions you want to use and see all of the options you have. Let Catalyst take care of the calculations so you can focus on playing the game your way. A complete cheat sheet is offered for your convenience.

MORE
- Multiple builds per champion from a diverse range of sources
- Specific match up tips
- Guide digests from sites such as Mobafire
- Champion counters
- Recommended bans based on your elo
- Game encyclopedia (look up items, summoners, runes, etc. right in the app!)
- Summoner lookup
- News and patch notes about the game
- ARAM builds
- LoL Esports (view schedules, team standings, and watch games)
- Build stats and analysis
- LoL Composition - Team composition analyzer (analyze weaknesses in enemy team compositions)
- LoL Meta - An tool that analyzes the current trends and give you an idea of what the meta looks like at each elo tier

ALL TFT FEATURES
- Static information (includes information about champions, items and traits)
- Cheat sheets
- Team builder
- Auto-generated team suggestions
- And more to come!

Want to help translate this app into another language? Email me at support@idunnololz.com!
Updated on
Jun 26, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
You can request that data be deleted
4.7
59.2K reviews
AkaliChamp
September 28, 2021
I never rate apps honestly, but I had to go out of my way for this one. Nearly everything about this app is, in my opinion, perfect. I get irrationally annoyed by poorly designed apps, and this app is one that simply leaves me with no complaints — almost anything you can think of, you can do on Catalyst; summoner lookup, custom builds, ability info, matchups, team comps, counter picks, you name it. The ads are minimal and non-intrusive, and the layout is simple and straightforward. Flawless.
65 people found this review helpful
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iDunnoLolz
September 28, 2021
Thank you so much for the kind review. I'm glad you enjoy the app!
A Google user
June 27, 2019
When i first started using this app, it was 5 stars, but the longer I've used it, the more it has declined. I was about to upgrade to the ad free version but it hasn't been updated with the new patch information and there are still values missing in some character ability descriptions. And with a new champion being released soon, I'll likely need to find a new reference for stats.
8 people found this review helpful
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A Google user
December 30, 2018
This app is very useful because it shows me things that aren't even available in game as well as the entire library of items in the game. Overall a great app but there is one thing that could be improved. There are some places in ability and item descriptions where instead of saying a number it says zero. fix this and this will get an easy 5 star.
7 people found this review helpful
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What's new

[!] Updated data to patch 12.12
[!] Fixed more bugs