The devil is in the details.
Stop second-guessing gear drops. Score any item in seconds, see how it moves your DPS, and follow verified S13 build guides — all in one place, all tuned to your class.
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Everything you need to play better
Built by Diablo IV players, updated every season, and free to start.
Gear Scorer
Enter your item stats and get an instant 0–100 score. Know in seconds whether to keep, upgrade, or salvage — based on verified S13 stat weights for your exact class and build.
Score → Model in One Click
After scoring a drop, click "Model as gear swap" to open the Theorycrafting Lab with that item's stats pre-loaded as a gear comparison. See the exact DPS delta before you commit.
Build Guides
Choose your class and playstyle. Get a full build guide — skill tree, stat targets, rotation, gear phases, paragon, runes, and mercenary. Curated each season from S13 community testing.
Theorycrafting Lab
Model your build's real DPS and EHP using S13's multiplicative damage buckets, crit averages, and armor DR curves. Compare gear swaps before committing Masterworking mats. Pro exclusive.
Patch Alerts
Emailed the day a patch drops if any of your saved builds are affected — which skills changed, which aspects got hit, and what it means for your playstyle. Never log in surprised.
Season Tracker
Track Season 13 objectives, see estimated hours remaining, and never lose progress between sessions. Saved locally, private to you.
Class Reference
Stat priorities and build benchmarks for all 8 classes — Barbarian, Druid, Necromancer, Paladin, Rogue, Sorcerer, Spiritborn, Warlock. Updated within 48 hours of each patch.
See it in action
A Barbarian ring scored in real time.
What Nephalem are saying
I was salvaging a 900 item power Barbarian ring because the stats looked bad. HellCraft gave it an 83/100. It's now my best ring.
The Theorycrafting Lab showed me my additive bucket was 4x but my crit average was 1.3x. Fixed crit and my DPS nearly doubled.
Got an alert that patch 2.1 hit my Whirlwind Barb build while I was at work. Had a new spec ready before my friends even knew there was a patch.
Simple pricing
Free forever for core features. Pro for the full forge.
Free
Get started instantly
- Gear Scorer (unlimited)
- Build Guides (all classes)
- Season Tracker
- 1 saved build
- Public build sharing
- Secrets & Easter Eggs
- Theorycrafting Lab
- Unlimited saved builds
- Patch alerts for your saved builds
Pro
Know what your gear is worth. Know when a patch breaks your build.
- Everything in Free
- Theorycrafting Lab — real DPS & EHP math
- Unlimited saved builds
- Patch alerts — emailed when your builds are affected
- Weekly meta digest + patch alerts
- Cancel anytime
Stay sharp when the meta shifts
Get the S13 stat weight breakdown and damage bucket cheat sheet for all 8 classes — so you know exactly what to prioritize when you sit down to gear. Free, no spam.