Fast IK

Name: Fast IK
Brand: Daniel Erdmann
Availability: InStock
Rating: 5 (87 reviews)

Launched Feb 2019 7.3y

Updated Apr 2022 4.1y Abandoned?

Daniel Erdmann

3.0/5 · 2 recent reviews · rating falling

5.0

87 reviews total

See store for pricing tools

Verify Compatibility & Buy

Price history

Tracked store price

No tracked price history is available for this asset yet.

Signals

Momentum (24h) +149 views

Recent Sentiment

3.0/5 · 2 recent reviews · rating falling

Package size 0.59 MB

AI Reviews Analysis

Editor's Cut

Pros

This asset is widely praised for its extreme ease of use, intuitive setup, and lightweight footprint compared to Unity's native Animation Rigging package. It is highly effective for rapid prototyping, procedural animation, and simple IK tasks, offering a clean, readable codebase that is easy for developers to modify or extend. Its ability to function independently of complex animation controllers and its compatibility with various bone physics setups make it a go-to solution for developers seeking a fast, no-nonsense alternative to bloated commercial tools.

Use this for rapid prototyping or simple procedural tasks where speed is paramount, but do not rely on it for complex, production-grade humanoid animation where robust constraints and professional support are required.

Cons

The asset lacks advanced features such as joint constraints, muscle influence, and weighting parameters, which can lead to unnatural deformations or mesh wiggling on complex humanoid characters. Users have reported occasional build errors due to minor code typos in Gizmo methods, runtime coordinate reset issues, and potential performance inefficiencies when scaling to a large number of objects. Furthermore, the lack of active developer support and the absence of built-in editor-mode execution make it difficult to integrate into professional, high-fidelity production pipelines.

Render pipelines

None flagged

Description

Fast IK is a Unity Inverse Kinematic solver. The main difference to all the other solvers out there is that the video shows how to use it and it is free.

Fast IK is based on the Fabic IK algorithm. It's super speedy and gives you nice IK animation. You can set different chain length and even poles. If you are used to blender's IK, you will get familiar with this right away.

The package contains a sample scene with three assets, that are going from extremely simple to advanced usage. You can use this for procedural animation.

If you find any bugs, just update the Github Project.

Yes, it is open source!