What would you want in a fuse bead pattern app? I'm building one.

Hey Product Hunt community!

I'm building Perler & Fuse Beads Studio — an offline iOS app that turns any photo into a fuse bead (Perler/Artkal) pattern grid, with a 1:1 lightbox mode where you lay a clear acrylic pegboard on your iPad and place beads over the backlight.

Before I launch, I'd love to hear from anyone who does fuse bead / perler / pixel art crafting:

1. What's the biggest pain point when converting a photo to a pattern?

2. Do you prefer 52x52 grids or custom sizes (multi-board X×Y)?

3. Would a solo-color spotlight mode help you place beads faster?

4. What features are deal-breakers for you in a pattern app?

Any feedback is super appreciated — I want to build something crafters actually love. Thanks!