When comparing Animation Desk vs Noodl, the Slant community recommends Noodl for most people. In the question“What are the best tools for prototyping mobile interactions/animations?” Noodl is ranked 11th while Animation Desk is ranked 19th. The most important reason people chose Noodl is:
You can use REST API to get data to your prototype.
Specs
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Pros
Pro Quick sketch
Great for light sketches, and some drafting for your animation.
Pro Free to use
Some features may require purchases but the app free as is, and works fine.
Pro Works on different platforms
It supports almost every major platforms, so working on iOS, Android, and Windows devices is not a problem.
Pro Photoshop compatible
Supports PSD file import/export, can export your draft to Photoshop easily for further works.
Pro Use external data
You can use REST API to get data to your prototype.
Pro Free
Pro Cross-platform
It is a Chrome app and you can test prototypes on any device that supports WebGL or Canvas.
Pro Prototype two-device (master — companion) apps
You can setup communication between two devices.
Pro Components
You can build one interactive component and then reuse it with different input values (like images, txt, width, speed — any value you can imagine).
Cons
Con Android version is not as extensive as the iOS version
Some of the options that are present in the iOS version of Animation Desk Cloud aren't integrated in the Android application. For example, features such frame labeling isn't available.