ComfyUI App Builder
I played around with this tool a bit and can say — everything works as advertised. To get started, you need to open the App Builder with a workflow already loaded: just click on any input parameters of the nodes, and they immediately turn into sliders or input fields on the right side of the window. After that, you press Next, select usually the node with the final image or video, and specify an important parameter: the default way to launch the workflow — via App or Nodes.
I created my own App, opened it on my computer — everything functions without issues. All of this is just the same JSON file, only additionally with a description of parameters for the App View mode. No magic, honestly.
But there is one nuance.
As I understand, this feature works well only when using Comfy Cloud. With local installation, the main difficulties arise — problems opening sent or downloaded workflows (and now also Apps). When trying to open it, a message appears: “BCЁ missing!” And nothing more — no hints on where to download the missing files or how to fix them. The entire interface only shows red nodes on half of the screen.
Sometimes (rarely, and with version chaos — which is also not sleeping) the “Install missing nodes” button helps, but when it comes to missing models (especially Lora), you’re left alone. Most likely, at this stage, you can already “finish” with someone else’s workflow. And the most persistent can look at the red nodes — they usually have model file names. But there are no instructions on where to get them or how to download. Moreover, models often have strange names or are renamed — making it almost impossible to find the source.
In the end, you’ll have to constantly contact the author of a specific workflow: asking repeatedly — “Where do I download this model?”, “And this model?” or “Where did you get VAE?”. And so on.
Of course, Cumfy Hub is good, but it’s roughly like downloading a scene for 3D Max with many plugins. At least you can Google plugin names and understand what’s what. Here, you’re one-on-one with how the author named their models and where they downloaded them.
Regarding node APIs — there are no such problems: they automatically contact providers for files. But only until custom nodes appear in the workflow, like local upscalers or custom Lora models.
And if you want to run App Builder specifically in ComfyUI — do it like this: run the command
python main.py –front-end-version Comfy-Org/ComfyUI_frontend@latest
Is that clear? Good luck!
Created with n8n:
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Created with syllaby:
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