ModsFinder

Apple Jam

by pe3ep

Apple Jam is a Fabric client mod that changes how inventory jamming works on macOS, so players can use the same parkour timing as on other systems.

FabricClient-side onlyGNU Lesser General Public License v3.0 onlyOpen source1.21.11 – 26.3

What it does

Apple Jam buffers the movement keys while a menu is open, which lets a player who jams the inventory by holding Forward and Jump keep the timing expected for a 0-tick jam. The author describes the fix as a response to the parkour community's inventory jamming technique, which does not behave consistently on macOS. Windows and Linux already match the vanilla behavior in most cases, and the mod brings macOS in line with them.

Apple Jam requires Fabric API and runs on the client alone, so players install it while servers stay untouched. It is open source under the GNU Lesser General Public License v3.0 only, and the project's source code and issue tracker are public. Files target 26.3 with the latest build dated 2026-09-24, across six release versions 1.21.11 – 26.3.

Key features

  1. Inventory jam buffering

    Movement keys are buffered while the inventory is open, so closing it can trigger the jam timing.

  2. macOS support

    The jam behavior that Windows and Linux show in most cases is reproduced on macOS.

  3. Single purpose

    The mod does one thing, adding inventory jam support, and changes nothing else in gameplay.

Compatibility

Latest build for each game version and loader.

26.31.0.3
26.21.0.2
26.1.21.0.1
26.1.11.0.0
26.11.0.0
1.21.111.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Questions

Does Apple Jam need Fabric API?

Yes. Fabric API is listed as a required dependency and must be installed alongside Apple Jam.

Does Apple Jam have to be installed on the server?

No. Only the player's game needs it, and servers run without it.

In the catalog

Apple Jam is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 8,071 mods support Minecraft 26.3.

Game mechanics mods29,952Fabric modsMods for 26.38,071

More from pe3ep

All projects
macOS Chat Fixes26.1 – 26.3

Similar mods

Sounds1.20 – 26.3Cut Through1.18.2 – 26.3Carpet1.14.4 – 26.3Client Tweaks1.12.2 – 26.3Double Doors1.16.5 – 26.3Sit1.7.10 – 26.3

What the author says

This is a very simple mod designed to do one thing: add inventory jam support to macOS. According to the Minecraft Parkour Wiki, inventory jamming is opening the inventory, holding Forward + Jump, then closing the inventory to consistently perform a 0-tick timing (jam).
pe3ep, on the Modrinth page

Official listing

Owner
pe3ep
Published
2026-04-22
Updated on Modrinth
2026-09-24
Facts verified
2026-10-15

Tags

Game mechanics
Open on ModrinthCompare