I built LUMI: see your room’s makeover before you buy anything
Hey Indie Hackers 👋
I’ve been through the same loop way too many times: you want to refresh a room, move into an empty apartment, or stage a listing… but you can’t really picture the “after” without spending hours (or money) measuring, modeling, and bouncing between moodboards.
So I built LUMI, an AI room planner that turns a real room photo into realistic “before → after” redesigns in minutes.
What LUMI does (in plain terms)
Upload a room photo
Pick a room type + style (or keep the original structure)
Add/replace furniture — including your own custom furniture images
Generate photoreal outputs you can compare and iterate
What makes it different (vs. generic interior “AI generators”)
Works from real photos and aims to keep geometry believable
Furniture add-ons (including custom pieces) to test actual items
Watermark-free exports on paid plans
2K / 4K output and custom sizes for presentations & listings
Optional higher-quality model mode for cleaner results
Who it’s for
Moving into a new place and want to plan quickly
Refreshing a bedroom/living room without full renovation
Realtors / Airbnb hosts doing fast staging concepts
Designers needing quick moodboard + layout variations to align with clients
I’d love your feedback
If you try it, I’m especially curious about:
Does it keep the “feel” of the original room well enough?
Which step feels slow/confusing?
What would make you trust the output for a real purchase decision?
👉 Try it here: https://raumplaner.io/en
Happy to answer anything about the build, models, or workflow.
