Changelog

What's new

Every SimHammer release, newest first.

4.5.3

October 7, 2026

MDT routes from the latest Mythic Dungeon Tools import again, with every Season 2 dungeon.

New

  • Season 2 dungeons for routes. Murder Row, Den of Nalorakk, The Blinding Vale, Voidscar Arena, Altar of Fangs, Ruby Life Pools, Temple of Sethraliss and Kings' Rest, with enemies, timers and maps. Walking time between pulls is a rougher estimate for these dungeons for now

Fixed

  • MDT route import. Routes exported from Mythic Dungeon Tools 6.2 failed with "corrupt deflate stream". MDT changed its export format, and SimHammer now reads both the new and the old one

4.5.2

October 7, 2026

Faster sims on servers, and a Drop Finder preferred gem fix.

Improved

  • Faster sims on servers. Self-hosted and Docker setups now use every CPU core instead of leaving two unused. On a 4-core server, a Drop Finder finished 1.7x faster. Sims run at low priority, so the rest of the server stays responsive. Set SIMC_THREADS to cap it. The desktop app is unchanged

Fixed

  • Drop Finder preferred gem. Choosing a preferred gem could make the sim fail. If you picked one before this update, pick it again, or Drop Finder will use the gem you wear most

4.5.1

October 6, 2026

Fixes for Raid Roster catalyst stats and missing item icons.

Fixed

  • Raid Roster catalyst items. Catalysed items in the loot report showed the tier piece's secondary stats instead of the stats of the item they were made from. The sim results were already correct; only the tooltips were wrong
  • Missing item icons. Large results, such as a big Drop Finder run or a shared sim opened in the app, showed question marks instead of item icons. Results with more than 100 different items now load every icon

4.5.0

October 6, 2026

Share your sims, a live sim view, and a new look with a light theme.

New

  • Share your sims. Click Share on any finished sim to get a simhammer.com link. Anyone with the link sees your full report in their browser, no app needed. Links are removed after 90 days without views, and after 180 days at most. You can stop sharing at any time
  • Open shared sims in SimHammer. Click "Open in SimHammer" on a shared sim, or paste the link in the top bar
  • Re-run a shared sim. Run it on your own machine and see how your result compares with the shared one
  • Edit a shared sim. Load someone's Quick Sim, Top Gear, Drop Finder or Crest Upgrades setup into its page and change it
  • Live sim view. While a sim runs you see its progress and time left, live DPS against your baseline, and a ranking of the finished combinations with their gear
  • Consumables and buffs. Results show which flask, food, potion, augment rune, weapon rune and raid buffs the sim used
  • Light theme. Switch between Dark and Light under Theme in the sidebar, or in Settings → Appearance

Improved

  • New look. Every screen shares one consistent design for headers, labels and buttons
  • Keyboard support. Pickers, toggles, sliders and tooltips work with the keyboard
  • Translations. All new text is translated into every language
  • Safe re-runs. Shared sims are checked for unsafe SimC options before they run on your machine

4.4.3

September 27, 2026

Fixed

  • On-use trinkets. 4.4.2 simmed two on-use trinkets in only one slot order. Top Gear sims both again, since the order they fire in matters

4.4.2

September 26, 2026

New

  • Untick equipped gear. In Top Gear you can untick an equipped item. The first item you tick for that slot becomes your new baseline, and everything else is compared against it. Every slot keeps at least one item, rings and trinkets two

Improved

  • Ring and trinket pairs. Two rings or trinkets that only swap slots are simmed once instead of twice. Fewer sims, same results

Fixed

  • +6 loot. Drops Hero 1/6 instead of Champion 5/6. Same item level, but it upgrades to 321
  • Heroic dungeon loot. Showed item level 269 instead of 276
  • Clicking an item's name or icon. Didn't tick or untick the row
  • Upgrade menu. Closes when you click outside it or press Escape
  • Wrong item name. Your character header was used as the name of your first equipped item
  • Roster import. Pasting several characters at once could give one character another's header or vault items

4.4.1

September 19, 2026

Fixed

  • Empty gear slots. Some items you're wearing showed as an empty slot in the gear overview. They show up again
  • Specs SimC can't sim. Holy Paladin, Discipline Priest, Holy Priest, Mistweaver and Preservation now tell you up front that SimulationCraft has no damage rotation for them, instead of starting a run that goes nowhere. Restoration Druid and Restoration Shaman sim as normal

4.4.0

September 12, 2026

Omnium Folio, bonus rolls, Devourer Demon Hunter and Korean.

New

  • Omnium Folio. Top Gear reads your folio from your character. Pick extra runes in a row and it sims every combination
  • Bonus rolls. Sim M+ and raid instances to find out where to spend your bonus rolls. This is a heavy sim with Full Precision on
  • Devourer. The new Demon Hunter spec, daggers included
  • Korean. SimHammer is now available in Korean

Improved

  • Compact Top Gear. Three display sizes, a section toolbar, unchanged slots folded away, and Reset all
  • Trinket pairs. Simmed in both slot orders
  • Translations. German, Spanish, French, Italian, Portuguese, Russian and Korean are complete

Fixed

  • Trinkets ranked too low. Items with an equip effect simmed as plain stat sticks
  • Raid BoEs shown as downgrades. Their secondary stats weren't set; you can now set them in the filter
  • Trash drops. Had the wrong item level
  • Catalysed gear. Came back with the wrong secondary stats
  • Two diamonds. Top Gear could suggest a set wearing both
  • Rough numbers. Rows pruned early kept the estimate from where they dropped out

4.3.3

August 27, 2026

New

  • Sim profiles. Save your sim settings as named profiles and switch between them from the footer. Share them as copy/paste strings; a built-in Default is always available
  • Per-item embellishments. Each crafted item in Drop Finder has its own embellishment dropdown, and sims with your pick
  • Local or cloud for roster sims. The Raid Roster Loot Report gets the same Run button as the rest of the app, so you can pick Local or Simmit

Improved

  • Clearer cloud errors. Simmit errors used to collapse into a bare "Unprocessable Entity". You now get the real reason

Fixed

  • Roster failures with no reason. A run could say "15 failed to sim" and nothing else. It now lists which raiders failed and why
  • Roster reports that never finished. If a run's sims had been cleared from your history, the report stayed at partial progress. It now completes

4.3.2

August 24, 2026

New

  • Manual gems & enchants. Set or remove a gem or enchant on any item yourself, instead of relying on the automatic picks
  • Preferred stats for crafted gear. Pick which secondary stats your crafted candidates are simmed with
  • Big-sim warning. Top Gear warns you before starting a local sim with 20,000+ combinations, since those can run for many hours

Improved

  • All Rankings. The results list no longer stops at the top 10; it keeps loading as you scroll
  • Progress on long sims. Staged sims show how many combinations are done out of the total, instead of a batch number that barely moves

Fixed

  • Ghost sims. A sim could run forever with nothing showing in My Sims and no way to cancel. It happened when your sim history had future-dated entries from a wrong PC clock. If you were affected, those future-dated entries are leftovers you can safely delete
  • Gem and enchant tooltips. Show properly in Top Gear again
  • Sim page freezes. A brief connection hiccup locked the progress view for good. It now recovers on its own, and a deleted sim shows "Simulation not found"
  • Catalyst. Previous-season fixed-difficulty gear is no longer offered for catalysing

4.3.1

August 16, 2026

New

  • Add item, My loot spec only. A new toggle. Turn it off to see everything your class can equip, not just what drops for your spec

Improved

  • Lighter page loads. The icon lookup is cached and compressed

Fixed

  • Icons. This season's newest gear showed up blank. Fixed everywhere, including the website
  • Seasonal items only off. Item searches offer each item's real drop levels, including off-track ones like Venomous Abyss mythic (344)
  • Talent trees. Icons recover instead of staying broken

4.3.0

August 12, 2026

Midnight Season 2.

New

  • Midnight Season 2. The new raid and dungeon pools are in, and the raid picker lists only this season's raids
  • Raid Roster, import from SimC strings. Paste your whole raid's SimC exports in one go (one per raider) and they all import with gear, no Armory lookup needed

Improved

  • Add item. Every search result has its own item level dropdown, showing the levels that item actually drops at
  • Under the hood. The sim job pipeline was restructured. Nothing changes for you, but it clears the way for what's next

Changed

  • Void Forge. The controls are hidden for now. Gear you already own that's Void Forged still sims correctly

Fixed

  • Venomous Abyss. Mythic drops sim at their real item level (344) instead of following the normal upgrade track
  • Raid Roster. A failed Armory refresh no longer wipes a member's gear

On desktop, also download the latest SimC in Settings: both weekly and nightly have an update.

4.2.0

July 17, 2026

Add any item from the loot catalog to Top Gear.

New

  • Top Gear, Add item. Opens the full loot catalog (the same browser as Drop Finder, with category tabs, instance, spec and slot filters, and search)

Improved

  • Top Gear. A cleaner layout for the options and toggles
  • Top Gear. The combination count lives in the config footer, so you always see how many sims you're about to run

Fixed

  • Top Gear. Could suggest a combination with two diamonds

The macOS build is not notarized, so Gatekeeper blocks it the first time you open it. Open it once, then go to System Settings → Privacy & Security and click Open Anyway next to the SimHammer notice. Or run xattr -dr com.apple.quarantine /Applications/SimHammer.app in Terminal. It's a one-time step.

4.1.0

June 17, 2026

The Sporefall raid, and the Raid Roster Loot Report.

New

  • Sporefall raid. Added to Drop Finder
  • Raid Roster Loot Report. Import your whole raid from the Armory, then sim every member against a boss's loot table to see who each drop upgrades the most. View it per item or as a player × item heatmap, with player and slot filters, per-member Quick Sim and copy-SimC. Find it on the new Raid Roster page
  • Import characters from the Armory. Wherever you paste a SimC export, you can fetch a character by region, realm and name instead
  • Void Forged & Catalyst drop variants. Drop Finder and the Raid Roster Loot Report can include Void Forged (weapons and trinkets) and Catalyst (tier) versions of drops as separate options

Improved

  • Dungeon Route. Your raid-buff toggles apply to the sim instead of being forced off

Fixed

  • Top Gear. Dungeon Route sims run again; they crashed before
  • Dungeon Route. Removed a stale raid-buff override that current SimC rejected as an unknown option
  • Raw input link. Shows a readable preview for large streamed sims instead of a JSON error
  • M+ Routes. Removed a duplicate footer; saved-route timestamps refresh automatically

4.0.0

June 14, 2026

Mythic+ routes, pause and resume, a new Sims page, and optional cloud sims through Simmit.

New

  • Mythic+ Routes. Import an MDT or keystone.guru string and sim your spec over a real M+ route, with pulls, enemy forces and pack-to-pack travel time
  • Route map & library. View routes on the dungeon map (color-coded pulls, pan and zoom) and save them grouped by dungeon, with per-route key level and HP%
  • Pause & Resume. Pause a long Top Gear run and resume it later, even after an app restart
  • Sims page. One place for active and past sims, with live progress, Pause/Resume/Cancel, stats and delete. Replaces History
  • Top Gear, multi-enchant selection. Compare several enchants per slot, like gems
  • Top Gear, per-row Sim button. Re-runs one result at high precision to settle close calls
  • Quick Sim, iteration count. Configurable under Advanced. Target Error is still better for most runs
  • Cloud sims with Simmit (optional). Offload heavy sims to the cloud. Add a Simmit API key in Settings → Compute Providers and pick Cloud on the Run button

Improved

  • Top Gear, multi-socket gems. Every gem combination is tried for items with several sockets, and they display correctly
  • Top Gear, precision. Each row shows a colored confidence dot (green = tight, red = noisy); hover for the exact accuracy
  • Top Gear. Rankings show the top 10; the Enchant and Gem sections can be collapsed
  • Sim queue. Local sims run one at a time so two can't fight over your CPU; cloud sims run alongside
  • Drop Finder. Impossible gear combinations are filtered out before simming. Fewer wasted sims, better results
  • Performance. No more freeze after a large Top Gear sim; polling pauses while the tab is hidden
  • Translations. Route screens are translated into all 7 languages

Fixed

  • Desktop. Window controls (minimise, maximise, close) no longer disappear in non-English languages
  • Top Gear, Compare talents. Keeps your active loadout as the baseline instead of sometimes swapping which build was shown and simmed as current
  • Garbled characters (±, ·) in some gear labels

SimHammer sims locally by default and always will; Simmit is entirely optional. SimHammer is not affiliated with, sponsored by or partnered with Simmit.

3.3.1

May 15, 2026

New

  • Quick Sim: optional Stat Weights toggle in the footer. Off by default — adds roughly 8× to sim time
  • Drop Finder: items with a primary stat your active specs can't use are now hidden

Improved

  • Top Gear: new 6-stage adaptive precision schedule with baseline DPS cutoff — roughly 40% wall-time reduction on typical jobs
  • Top Gear: stage schedule adapts to your Target Error setting (fewer stages for loose precision, more for tighter)
  • Top Gear: early stages now run profilesets in parallel on multi-core machines
  • Saved routes: the whole row is clickable in the sidebar
  • Translations: all 7 languages back in sync (DE, ES, FR, IT, PT, RU, EN)

Fixed

  • Top Gear: embellishment limit (max 2) is properly enforced again
  • Top Gear: "Copy Enchants" preserves alternatives that already have their own enchant
  • Top Gear: existing gems are kept when "Replace Gems" is off
  • Classes: weapon proficiencies corrected for Paladin (Holy, Protection), Monk (Mistweaver, Windwalker), Druid (Restoration), and Hunter (Survival)
  • Desktop: black-screen on relaunch fixed. The app now refuses to start a duplicate instance (focuses the existing window instead), falls back to a different port when the previous backend is still running after a crash, and shows a real error dialog when the backend can't start

3.2.2

May 13, 2026

New

  • Top Gear: upgrade pieces with Void Forge
  • Sim Rotation: option to sim with Assisted Rotation or One Button rotation

Improved

  • Drop Finder gear now sims with the same enchants and gems as your equipped gear (more options coming later)

Fixed

  • Drop Finder: checkbox is clickable again
  • Improved update notification

3.2.1

April 25, 2026

New

  • Build SimC from source — opt-in via --build-simc flag or SIMC_BUILD_FROM_SOURCE=1 (Docker: use docker-compose.source.yml)
  • Current SimC source and version shown in Settings
  • Desktop falls back to in-memory storage if SQLite fails
  • Pet and summon rows in the damage breakdown now show class-appropriate icons
  • View Raw Input link on sim loading and error pages — easier to debug failed sims

Improved

  • Per-ability DPS is now normalized over fight length — rows sum correctly to total DPS
  • Pet abilities grouped into one expandable row per pet, matching Raidbots
  • Talent normalization preserves the tree hash — fixes SimC rejecting normalized strings
  • Damage bars are solid instead of fading out

Fixed

  • Potential macOS / amd64 build fix
  • SimC hash error (hopefully)

3.2.0

April 20, 2026

Live SimC updates land on Desktop and Docker. Run the latest SimC build without updating the app or pulling a new image.

New

  • Multiple SimC versions — run sims against weekly or nightly SimC builds, switch between them anytime, and let the app auto-update them in the background
  • SimC version manager — install, remove, and switch between SimC versions from the desktop settings page
  • Admin panel — manage server settings and SimC versions from the web interface (Docker/standalone deployments). Please read the docs before using
  • Drop Finder redesign — category buttons, dungeon pool selection, difficulty and upgrade level pickers, and slot filtering
  • Region support — character portraits and profiles now work correctly for all regions (US, EU, KR, TW)
  • Return to Top Gear — option on the Sim Result page to go back to Top Gear with the same selection

Improved

  • Faster desktop builds — desktop releases use pre-compiled SimC binaries instead of building from source
  • Better Docker support — standalone image supports multiple SimC branches with automatic background updates

Fixed

  • PostgreSQL support
  • UI: fixed flickering when running in non-English languages

3.1.0

April 11, 2026

New

  • Enchant & Gem Sim — compare enchants and gems across all slots with color grouping and diamond support
  • Raid Buffs & Consumables — toggle individual buffs, select food/flask/potion/augment/weapon rune from game data
  • Clipboard Auto-Import (Desktop) — opt-in: copy /simc in WoW, switch to SimHammer, gear imports automatically
  • Internationalization — 7 languages (EN, DE, FR, ES, IT, PT, RU)
  • Content Scaler — adjustable UI zoom
  • Drop Finder: By Slot grouping — new default result view, groups upgrades by gear slot

Improved

  • Tabbed sim options drawer (Simulation / Buffs & Consumables)
  • Fight length up to 60 min with direct input
  • Target error configurable in Expert Mode
  • Generated items (socket/upgrade copies) persist across navigation in Top Gear
  • Overall UI improvements

Fixed

  • Gem combos now generate all unique combinations (not just same-gem)
  • Fixed duplicate rings, fight length display (4:60→5:00), HTTPS localhost, checksum validation with \r\n
  • Fixed Top Gear state restore for generated items

2.2.0

April 1, 2026

New

  • Talent loadout support — reads talent loadouts from the SimC addon export and lets you pick which to sim
  • Talent comparison — sim multiple talent builds at once to find the best one
  • Per-item catalyst conversion — each eligible item now has a "Convert to Catalyst" option in its upgrade dropdown
  • Bulk catalyst toggle — the Revival Catalyst switch converts the best eligible item per slot in one click
  • Catalyst charge input always visible — set your available charges regardless of toggle state
  • All SimC fight styles — every SimulationCraft fight style is now available with a new dropdown and 3-column layout
  • Item category limits — enforces restrictions like max 2 embellished items per combination
  • Quick select buttons — Vault, Catalyst, and Clear buttons to quickly select or deselect item groups
  • Character sheet preview — click a simmed result row to see that gear set with slot names and item details

Improved

  • Accurate combo counting — catalyst items are correctly counted against your available charges
  • Combo count accuracy — the displayed combination count now always matches what the sim actually generates
  • Sim button always visible — the sim button now stays at the bottom of the page
  • Larger fonts — bumped overall font sizes for better readability
  • Wider layout — content area expanded to use more screen space on larger monitors

Fixed

  • Fixed item combinations — various fixes to how gear combinations are generated and counted

2.1.0

March 28, 2026

New

  • Sim Scenarios: compare performance across multiple fight styles with the same gear
  • Upgrade Compare: find the best crest upgrade path for your gear within a budget
  • Damage breakdown now shows grouped abilities (e.g. Dispatch includes Scoundrel Strike) with collapsible sub-rows
  • Character render and faction crest shown on sim results
  • Instance images on Drop Finder raid and dungeon selectors
  • Drop Finder now supports showing off-spec items (with a warning)

Improved

  • Live SimC log output while waiting for sim results
  • Drop Finder items can now be grouped by instance
  • Sim results display shows more detail: iterations, target error, and sim duration
  • Damage breakdown now correctly accounts for all sub-abilities (Scoundrel Strike, Fan the Hammer, Sinister Strike Extra Attack)
  • Better weapon and gear constraints in Top Gear
  • Upgraded to Next.js 15

Fixed

  • Fixed an issue where some Top Gear combinations were not evaluated correctly
  • Fixed missing abilities in the damage breakdown
  • Various UI and stability improvements

2.0.0

March 25, 2026

New

  • Pet damages shown in sim result damage breakdown
  • Option to cancel running sims if they take too long

Improved

  • Tweaked UI for better readability across the board
  • SimC input now persists when refreshing or browsing between pages

Fixed

  • Great Vault Top Gear now allows selecting all vault items

1.9.0

March 24, 2026

New

  • Settings for combination limit (previously fixed at 500, now configurable up to 10,000)
  • History tab to view your recent simulations
  • Initial support for Vault items

Improved

  • Refined weapon and gear constraints for Top Gear so displayed items are a better fit
  • Enhanced debug information after a sim

Fixed

  • Fixed an issue where the client could crash

1.8.0

March 23, 2026

New

  • Advanced settings: configurable fight duration and boss count
  • Advanced settings: custom APL and SimC input
  • macOS and Linux desktop builds
  • PostgreSQL support for server deployments

Improved

  • Drop Finder now only shows eligible items for your class and spec
  • Drop Finder supports changing drop level
  • Drop Finder ranks items by boss

Fixed

  • Many bug fixes across the board
  • Various UI tweaks and improvements
  • Optimized SimC binary and reduced folder size

1.2.0

March 23, 2026

New

  • Quick Sim: paste SimC addon export, get DPS and ability breakdown
  • Top Gear: find optimal gear combinations from bags, bank, and vault
  • Drop Finder: browse loot tables for raids, dungeons, and Mythic+
  • Desktop app for Windows, macOS, and Linux with auto-updater
  • Docker support for self-hosted web deployments