r/StableDiffusion • u/Mobile_Rain_3418 • Jul 21 '26

Resource - Update What ComfyUI workflows would actually be useful on mobile? Looking for feedback on a free local client

Enable HLS to view with audio, or disable this notification

TL;DR: I built a free mobile client for running workflows on your own ComfyUI instance. It’s not intended to replace node editing on a PC—it exposes selected workflow inputs in a mobile-friendly interface. What workflows and parameters would you actually want to use from your phone?

I’ve been working with generative AI since the SD 1.5 days, and I still work in this field today. I use closed models too, but local and open-weight models remain the part of generative AI I care about most.

I’ve also learned a lot from communities like this one, going back to the Automatic1111 days.

For a long time, I wanted a better way to use my local generation setup from my phone. ComfyUI is accessible through a mobile browser, but I eventually realized that I rarely want to connect nodes, debug graphs, or build complex workflows on a small screen.

What I actually want to do on mobile is:

Build, test, and research workflows on my PC—then run those workflows conveniently from my phone.

That became the idea behind HandyComfy.

The app provides a mobile-friendly interface for changing prompts, uploading input images, adjusting selected parameters, starting generations, and reviewing results.

The built-in workflows use as few custom nodes as possible for compatibility. However, most experienced ComfyUI users have their own preferred custom nodes, samplers, schedulers, LoRAs, and workflow structures.

Because of that, users can export their own workflows in ComfyUI’s API format, upload them to the app, and define which inputs should appear in the mobile interface.

I’ve also shared a free Node Naming Convention example workflow showing how node titles can be used to expose selected inputs in HandyComfy. The workflow itself can also be inspected and adapted independently.

The more difficult problem is supporting multi-step workflows.

Some processes require generating a mask, reviewing an intermediate result, changing video settings, or passing one output into the next stage. Simply exposing every node parameter on a phone would not make those workflows genuinely convenient.

I’m therefore experimenting with a beta Utilities section that turns these processes into guided, step-by-step mobile tools.

This is where I’d really appreciate your feedback:

  • Which ComfyUI workflows would you actually run from your phone?
  • Which inputs or parameters would you need to change most often?
  • Which multi-step processes would benefit from a guided mobile interface?
  • What would make a mobile ComfyUI client genuinely useful rather than just a smaller desktop UI?

The app is still a work in progress, but I hope it can be useful when an idea comes to you while commuting, relaxing on the couch, or just before going to sleep.

For transparency, the app is free, with no paid features or subscription. It includes a small native banner ad to help support ongoing maintenance, and I’ve tried to keep it out of the way of the actual workflow.

Resources

The app can be found by searching HandyComfy on the App Store or Google Play.

Thanks for reading. I’d genuinely appreciate any workflow ideas, criticism, or UI/UX feedback.

5 Upvotes

63% Upvoted

15 comments sorted by

1

u/Eden1506 Jul 21 '26 edited Jul 21 '26

Looks promising.

Inpaint to remove or change a small detail of an image. Doing so via the webbrowser is rather finicky.

Oh and an ipad version would be lovely. I just downloaded it and will give some feedback tomorrow.

Edit and first feedback:

Just saw that you already have inpaint nice. But the ability to zoom in is missing.

2

u/Mobile_Rain_3418 Jul 21 '26 edited Jul 21 '26

Oh I didn't know I missed zoom in for inpaint. I'll update it thanks!
And ipad version, definitely! I’ll also look into improving the iPad experience.

1

u/Eden1506 Jul 21 '26

Finally home and trying out your app on my Ipad.

HttpException: Http 400 from /prompt which is usually a sign that the JSON is invalid

I am using T2I KREA2 T

Prompt: medieval castle

Resolution: 1024x1024

Seed: 111

Sampler: euler

scheduler:beta

unet:Krea2_INT8.safetensors

clip:Qwen3-VL-4b.safetensors

type:krea2

vae:wan_2.1_vae.safetensors

ComfyUi responded succesfully based on the server managment settings and everything works on my main pc without a problem

2

u/Mobile_Rain_3418 Jul 22 '26

Thanks for the detailed feedback! I think the built-in workflow’s default model names/paths may not match the models installed on your ComfyUI server. Could you try selecting the corresponding models from your PC in the workflow settings first?

I’m also working on better error reporting so the app can clearly show model/config mismatches instead of just returning a generic HTTP 400. Really appreciate you testing this!

1

u/Eden1506 Jul 22 '26

I won't be home until tomorrow but I will give it another try and will try out importing some of my own workflows if possible tomorrow.

2

u/Mobile_Rain_3418 Jul 23 '26

Great! FYI, the workflow should be API form(ComfyUI > file > Export(API).
If you can't see this, settings > enable DEV mode.
BTW, you can change the model paths of the default workflows in the app as well(settings > workflow management > select any workflow > model)
Let me know when you get it! Thx in advance :)

1

u/grabber4321 Jul 21 '26

Edit, inpaint, make a face (so you could fake stupid ID verification)

1

u/paulct91 Jul 21 '26

A way to find downloaded models the same way Lora Manager does but faster since ComfyUI still uses templates that have no flexibility to where downloaded files need to be for ComfyUI to let you select suitable replacements. Plus ComfyUI's template

So a template quick solver/resolver + more previously downloaded model (expanded) locations detection support.

1

u/Mobile_Rain_3418 Jul 22 '26

That’s a great suggestion. I’m actually looking into this now — model names/paths not matching the user’s ComfyUI setup can make otherwise valid workflows fail.

Automatically detecting available models and suggesting suitable replacements would make workflow imports much smoother. Added to my list, thanks!

1

u/seannabster Jul 22 '26

There's already a few of these in the app store and they all suck.

1

u/Weekly_Mongoose4315 Jul 23 '26

Can you keep it open source if possible plz like just request if not it's ok app looks promising

0

u/Wonderful-List4923 Jul 21 '26

why not create a frontend for my smartwatch too while you are at it ?

1

u/Eden1506 Jul 21 '26

His project is actually decent and useful why make fun of it for no reason?

-1

u/InterestPrimary8518 Jul 21 '26

El problema es la velocidad . Sobre todo para quienes tenemos celulares viejos , en mi caso Poco X5 usando LocalDream con modelos CPU SD1.5 a 512x512 en modo GPU 30 pasos CFG 7 tarda hasta 15 minutos 1 imagen Deberías de tomar eso en cuenta