Sims 4: How to Use a Mod Manager

To use a mod manager in The Sims 4, install either Sims 4 Mod Manager by GameTimeDev or the CurseForge app, point it at your game and let it read your Mods folder. From there you can sort your files, find duplicates and update mods hosted on CurseForge, and GameTimeDev’s program can also switch individual files off without deleting them. Neither one tells you which mod is broken: GameTimeDev’s own FAQ answers that question with a flat “NO!”, so finding a bad file still takes the 50/50 method.

Below we compare the two tools, then cover setup, daily use, how a manager helps you hunt down a broken file, and what it does not do for you after a patch. Mods are PC and Mac only: per EA, they cannot be installed on PlayStation or Xbox.

Which Mod Manager to Use

If most of your mods come from creators’ own sites, Sims 4 Mod Manager (often shortened to S4MM) fits better, and it can browse and update CurseForge mods too. If you get nearly everything from CurseForge, the app alone may be all you need. As of November 8, 2026, the newest S4MM release is 2.1.24 Beta, from September 2026.

A warning about the name: an older, unrelated program also called The Sims 4 Mod Manager, by a different author, dates from 2015 and still turns up in searches. Skip it. This guide means GameTimeDev’s.

How to Set Up Sims 4 Mod Manager

1. Download from the official site. GameTimeDev says to get it only from his official site or his Discord, because other copies could be tampered with.
2. Pick your version. On Windows, run the setup .exe; if it gives you trouble, the site offers an alternative setup as a zip below the main button. On a Mac, choose Apple Silicon or Intel, open the .dmg and drag the app to Applications.
3. Keep it out of your Mods folder. The FAQ is clear on this: it is a standalone application, not a mod, and can be installed anywhere except inside the Mods folder. It only needs access to that folder.
4. Let the first load finish. Large folders take a while. The developer says it is “not highly optimized or lightweight,” and that big mod folders can slow it down or crash it.

If your antivirus flags it, the FAQ says that can be a false alarm for a lesser-known developer, and that every official release is digitally signed so you can verify the signature yourself. The program is free to use, and an ad-free version is available through his Patreon. You need an internet connection for downloading mods and updates.

How to Use Sims 4 Mod Manager

GameTimeDev describes it as “a file explorer made just for Sims 4 Mods and CC.” Here is what the official site lists:

• Move and sort. Move files between folders and create subfolders. Keep script mods shallow while you sort: .ts4script files only load from the Mods folder or one subfolder down.
• See what a file is. It shows thumbnails and a 3D view, which helps with files that have unhelpful names.
• Activate and Deactivate. Switch a file off without deleting it.
• Duplicate Finder. Scans for duplicates based on file content, whatever the files are named.
• ID Conflicts. Finds CC items that share the same in-game ID, which the site says can lead to conflicts and unexpected behavior.
• Polycount Analyzer. Finds high-poly CC that may hurt performance.
• CurseForge integration. Browse and download CurseForge mods, update them, and detect the ones already in your folder.

How to Use the CurseForge App for Sims 4

The steps below come from CurseForge’s Sims 4 getting started article:

1. Add the game. Open settings, click the + button and choose Scan computer for games. If the scan misses it, use Manually add a game and select the folder holding TS4_x64.exe, or The Sims 4.app on a Mac. The app finds your Mods folder by itself.
2. Install mods. Open the Browse tab, hover over a mod and click Install. Installed mods appear in My Mods.
3. Update mods. An orange Update button appears when a mod has a new version. Click it on one mod or use Update all.
4. Add what you already have. Click Scan mods folder. CurseForge warns this can be slow.

Files from other sites still appear, marked with a folder icon, but the app cannot manage or update them. If the app says a mod is installed and the game disagrees, check Game Options > Other first: the app installs the files, and the game decides whether to load them.

Using a Manager to Find a Broken Mod

GameTimeDev’s FAQ says the program “cannot determine if a mod is broken or incompatible.” It can still make the search faster:

• Run the 50/50 method with Activate/Deactivate. EA’s method is to add files back in batches and keep halving the batch that brings the problem back. Deactivating files saves you dragging them in and out of the folder. Our guide to finding broken CC walks through every round.
• Clear out duplicates and ID conflicts first. That removes some suspects, but MC Command Center‘s author, Deaderpool, warns that conflict detection only catches two files editing the same resource. It cannot tell you a file is out of date, and it cannot read script mods.
• Let an error tool name the file. Better Exceptions reports the mod behind many errors as they happen, which a manager will not do.

While you test, exit without saving. EA warns that saving with mods off can remove that content from your save.

What a Manager Does Not Do After a Patch

A manager does not change the game’s own settings. EA turns mods off with every update, so you still have to go to Game Options > Other, tick Enable Custom Content and Mods and Script Mods Allowed, and restart. Update buttons only cover mods hosted on CurseForge, so check creators’ own pages for everything else. Our guide to fixing mods after a game update has the full order.

The manager itself usually needs no update when the game patches. GameTimeDev’s FAQ says it mostly works independently of game updates, though a patch occasionally requires one, and his installer replaces the old version while keeping your settings and data.

Once your folder is tidy, our best Sims 4 mods list is the place to restock, and if you only need a quick change to a save, the game’s built-in cheats may do it with no mod at all. Everything else is on our Sims guides hub.

Frequently Asked Questions

Can a mod manager find broken mods in Sims 4? Not by itself. GameTimeDev’s FAQ says his cannot detect broken mods, though switching files off in batches speeds up the 50/50 method.

Is Sims 4 Mod Manager free? Yes. An ad-free version is available through the developer’s Patreon.

Does Sims 4 Mod Manager go in the Mods folder? No. It is a standalone program and should not be placed inside the Mods folder.

Do I need to update it when The Sims 4 updates? Usually not, per the developer, though a game patch occasionally requires one.

Can the CurseForge app manage mods from other sites? It detects them and marks them with a folder icon, but it cannot manage or update them.

Does Sims 4 Mod Manager work on Linux? Not natively. The developer’s FAQ says no native Linux version is available at this time.

Does a mod manager work on PS5 or Xbox? No. Per EA, mods are only available on PC and Mac.