When comparing Noodl vs HotGloo, 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 HotGloo is ranked 15th. The most important reason people chose Noodl is:
You can use REST API to get data to your prototype.
Ranked in these QuestionsQuestion Ranking
Pros

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).
Pro Seamless
HotGloo's interface is designed to be intuitive. You won't have to invest a lot of time in trying to figure out how it works. You can jump straight into work and rely on the abundance of tutorials, webinars, and documentation in case you get stuck.
Pro Interactive
HotGloo makes collaboration and interaction easy. You can add others to your account and send projects for review and feedback rounds.
Cons
Con Expensive subscription model
$27 a month soon racks up to a lot of money, a standalone product will be much cheaper in the long run.
