Hi indiehackers community!

Built PromptMatch as a fun game to compete with my girlfriend, and it unexpectedly became a great way to improve image prompt writing.

How it works:

- You see a target image

- You write a prompt to recreate it

- You get a score based on how close your generated image is

The score combines:

- Content similarity - compared using CLIP (neural-net) embeddings

- Color similarity - HSV histogram

- Structure similarity - a lightweight HOG-style layout comparison

Game modes:

- Unlimited

- Time limit

- Daily challenge (free, once per day)

What I’m trying to build: - A simple, replayable product where people can both have fun and gradually get better at prompt quality.

I’d love feedback on:

- First impression of the game loop

- Whether scoring feels fair/useful

- What would make you come back daily