AI Interior Design Apps: 7 Free Tools Worth Trying in 2026

Hiring an interior designer typically runs $5,000 to $15,000 per room. That’s the whole reason AI interior design apps exist now — you get to preview a full redesign, new furniture, new colors, a different style entirely, before spending a cent or moving a single chair.

The catch is that most of these tools aren’t as free as they claim. Some want a credit card before showing you anything. Some slap a watermark across every render until you pay. Some give you one blurry image and call it a trial. We skipped the marketing pages — a lot of which are written by the company selling the app — and checked what each free tier actually delivers.

1. RoomGPT

You get a handful of free credits at signup, usually 1 to 3, then it switches to paid credits after that. Worth trying for what you get free, just don’t expect an ongoing free plan — some users report the free credit not showing up reliably, so don’t count on it if you’re on a deadline.

Good for a quick first taste of AI room redesign before deciding whether to commit to something paid.

2. Homestyler

Free 3D room and furniture planning, and it leans toward layout rather than photo-to-photo style changes. You’re building a room from scratch — placing real furniture at true scale to see if a layout actually works before you buy anything.

Less useful if all you want is “what would my current room look like in a different style.” That’s not really what it’s built for.

3. Spacely AI

Free to start, no credit card. What stands out here is a dedicated kitchen visualizer and a bathroom design tool — genuinely useful if you’re planning a specific-room remodel instead of a general style refresh.

More specialized than a one-click redesign app, so expect a bit more of a learning curve.

4. Canva

If you already use Canva for anything else, this is the path of least resistance — no new account, no new app. The interior styling tool is just sitting there in a plan you probably already have.

Less photorealistic than dedicated AI interior design apps, though. It’s a quick style preview, not a serious render.

5. SketchUp Free

Completely free, runs in the browser, and it’s about as close to an industry standard as 3D modeling software gets. The free version isn’t a stripped-down demo — it’s genuinely capable.

There’s a real learning curve compared to upload-a-photo tools. This is modeling software, not a one-click generator, so budget some time to learn it.

6. ReimagineHome

Free trial renders, no credit card required. Several independent testers point to this one for realism specifically — it seems to actually respect your room’s real geometry and lighting instead of slapping a generic style filter over everything.

Like most tools here, the free tier is trial-sized. Enough to judge quality, not enough to redesign your whole home.

7. Planner 5D

Free for basic floor plan drawing, though exports carry a watermark unless you upgrade. If what you actually need is a to-scale floor plan rather than a styled photo, this is built specifically for that — walls, rooms, layouts, accurately.

Doesn’t do photo-style visualization the way the others do. Different tool for a different job.

Something Worth Knowing Before You Trust Any “Best App” List

A fair number of the most confident-sounding “best AI interior design app” articles online are written by the company that makes the app being recommended. That’s not necessarily a red flag by itself, but it’s worth reading past the headline ranking and checking the actual free-tier limits described further down — the same way you’d check any review from the seller.

So, Which AI Interior Design App Should You Actually Use?

• Want a quick first look at what AI redesign even looks like? RoomGPT, knowing the free tier is limited.
• Planning actual furniture placement, not just a style swap? Homestyler.
• Remodeling a kitchen or bathroom specifically? Spacely AI.
• Already living inside Canva for other things? Canva’s interior styler.
• Want precise, to-scale planning? SketchUp Free or Planner 5D.
• Want the most realistic render of your actual room? ReimagineHome.

Most people end up using two tools together — a quick AI preview for inspiration, then a to-scale planner like SketchUp or Planner 5D once they’ve picked a direction and need to plan the real purchase.

This reflects free-tier testing as of 2026. Free plan limits, credit counts, and watermark policies change often across these apps — check each tool’s current terms before relying on them for a real renovation decision.