Not every player wants an extra platform running in the background just to get build suggestions. If you’re looking for a League of Legends companion app that installs and runs on its own — no Overwolf required — this guide covers your best options in 2026 and what each one actually does.
What is Overwolf?
Overwolf is a platform that lets developers build in-game overlays without dealing directly with each game’s native API. Many of the most popular LoL companion apps — Porofessor, Blitz, U.GG overlay — are built on top of it.
That’s not inherently a problem, but Overwolf runs as a background process that hooks into your system to enable its overlay infrastructure. Some players prefer to avoid it because:
- Extra RAM usage — Overwolf consumes resources before any app runs on top of it
- Additional installation step — installing an app means also installing the Overwolf client
- Privacy preferences — Overwolf’s data model involves cloud processing of game state
- Performance concerns — on lower-end PCs, every background process matters
None of these are dealbreakers for most players. But if you’d rather have a lighter, more direct setup, there are solid alternatives that don’t depend on Overwolf at all.
Best Standalone LoL Companion Apps (No Overwolf)
The apps below are fully independent — they install and run without Overwolf as a dependency.
| App | Type | Free tier | In-game overlay | Champion select |
|---|---|---|---|---|
| Buildzcrank | Desktop (Windows) | Fully free | Real-time AI | Runes, bans, picks |
| iTero | Desktop (Windows) | Yes (limited) | Yes | Yes |
| op.gg | Web + desktop | Free | Web only | Yes |
| Mobalytics | Web + desktop | Free (limited) | Partial | Yes |
Buildzcrank — Real-Time AI Overlay, No Overwolf
Buildzcrank is a standalone Windows desktop app that reads your game state directly from League’s local API — the same data endpoint Riot exposes to all third-party tools. No Overwolf. No cloud processing of your match data.
What it does during a game:
- Reads your champion, gold, health, inventory, and the enemy composition every few seconds
- Runs an AI model locally on your machine to calculate which item makes most sense to buy right now
- Shows that recommendation in a compact overlay you can glance at when you back to base
The key difference from stat-based apps: the recommendation isn’t a static build path. It adjusts if the game changes — if you’re snowballing, if you’re behind, if the enemy just built a specific item.
Champion select: Buildzcrank also shows runes, ally and enemy picks, and ban tracking before the game loads.
Price: free. No game limit, no premium tier, no registration required.
iTero — Champion Select Focus
iTero is another Overwolf-free desktop app for Windows. It’s built in Rust using the Tauri framework, which makes it notably lightweight.
iTero’s main strength is the champion select experience — it surfaces counters, synergies, and suggested runes clearly. The in-game item overlay exists but is less developed than its draft phase tooling.
Worth considering if your priority is champion select analysis rather than real-time in-game build recommendations.
Web-Based Alternatives
If you don’t want to install anything at all, web apps like op.gg and Mobalytics work directly in a browser. You look up your summoner name, pull up the pre-game analysis, and alt-tab back into League.
The limitation is obvious: you can’t have live in-game recommendations without a desktop process running. These work best for pre-game research, not real-time build decisions.
How to Choose
Choose Buildzcrank if: you want real-time item recommendations that adapt to your actual game state, with no Overwolf and no registration required.
Choose iTero if: champion select analysis is your priority and you want the lightest possible footprint.
Use op.gg or Mobalytics (web) if: you prefer not to install anything and pre-game research is enough for you.
FAQ
Do any of these apps risk a ban from Riot? All of them use Riot’s official Live Client Data API or the game’s local data endpoint. None of them read game memory, inject code, or automate inputs. That said, always check Riot’s current third-party app policy for your region.
Does “no Overwolf” mean the app is safer? Not necessarily from a ToS standpoint — Overwolf-based apps also use Riot’s approved data sources. “No Overwolf” is about your preference for how software is installed and what runs in your background, not about safety.
Which app uses the least RAM? iTero (Tauri/Rust) is the lightest. Buildzcrank is also minimal compared to Overwolf-dependent apps since there is no underlying platform overhead.
Can I use more than one app at once? You can, but overlapping overlays can get cluttered. Most players pick one in-game overlay and one web tool for deeper pre-game research.
Is Buildzcrank available for Mac? Windows only for now. League’s local API and the overlay system are both oriented toward Windows.
What companion apps use Overwolf? Porofessor and Blitz both run on Overwolf. If you install either of them and don’t already have Overwolf, it will be installed as part of the process. Both apps are otherwise well-regarded — the choice is about whether you want Overwolf on your system.