The Best Room Design Apps in 2025 : Tested and Ranked

After testing seven of the most widely used room design tools — drawing floor plans, dropping in furniture, running AI layout generators, and trying to do as much as possible without paying — we think Coohom is the best room designer for most people who need to plan an actual room. It combines accurate floor planning, a genuinely useful AI layout tool, and photorealistic rendering in a single browser-based tool. You can do a lot without spending anything.

If you don't need floor plan accuracy and just want to see what your room could look like in a different style, RoomGPT is faster and more fun. And if you've never used a design app before and find everything else overwhelming, Planner 5D has the most forgiving learning curve.

But most people land somewhere in the middle: they want to test whether their sofa fits, see the layout in 3D before they buy anything, and maybe share something presentable with a partner or contractor. For that use case, Coohom is the clear pick.

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Who this is for

This guide is for homeowners, renters, and interior designers who want to plan a room layout digitally before making real-world changes. We're not covering professional architectural CAD software (SketchUp, AutoCAD, Revit) — those are different tools for different workflows. We're also not covering pure AI photo editors that transform room images without any spatial planning component; those serve a different purpose and we cover them separately.

We focused on tools you can use without a design background, that run in a browser or on a phone, and that let you test actual furniture placement in a real-sized room.

Why you should trust us

We spent time inside each of these tools completing the same test project: a 14 x 16 foot living room with one window and two doorways, furnished with a sectional sofa, coffee table, TV unit, and two armchairs. We tested how each tool handled exact dimensions, whether the 3D view gave us genuinely useful spatial information, and how each tool's AI features — where they existed — actually performed versus how they were marketed.

Our pick: Coohom

The single most important thing a room design app needs to do is tell you whether your furniture actually fits. Most tools fail at this in subtle ways: they let you drop furniture into a room but don't force you to work at real scale, so a layout that looks fine on screen turns out to be physically impossible. Coohom doesn't have this problem. You enter your room's exact dimensions to start — wall lengths, ceiling height, door and window positions — and the entire tool operates at real scale from that point forward.

The AI auto-layout feature is genuinely useful in a way that most "AI" claims in this space are not. Give Coohom your room dimensions and a style direction, and it generates a furnished layout in seconds that respects clearance space and traffic flow. It's not magic — the results are a starting point, not a finished design — but it produces layouts that are spatially coherent, which is more than can be said for tools that generate photorealistic images with sofas floating in mid-air or walkways that don't exist.

The furniture library is enormous: millions of 3D models, including pieces from real furniture manufacturers, which means you can drop in something close to what you're actually considering buying. The rendering quality is the best we tested at this price point — one-click photorealistic renders that are good enough to share with contractors or use in a presentation. If you want to see the tool in action before committing, the online room designer runs entirely in your browser with no download required.

The free tier is more useful than most. You can build a full floor plan, furnish it, view it in 3D, and export basic visuals without paying. HD rendering and some of the more advanced AI features require a subscription, but the free version doesn't feel artificially crippled the way some competitors' free tiers do.

What Coohom doesn't do well: The interface has a learning curve. The first time you open it, there's more to figure out than in something like Planner 5D or RoomGPT. If you want a result in two minutes without reading anything, this isn't the tool for that. It's also primarily a desktop experience — the mobile app exists but works better as a companion than as your main workspace.

Bottom line: If you're planning a real room and you want the design to actually work before you move a single piece of furniture, Coohom is the most capable free-to-start option we found.

Also great: Floorplanner (for free, no-frills floor planning)

Floorplanner has been around since 2007, and in some ways it shows — the interface is functional rather than polished. But it does one thing very well: it lets you build an accurate floor plan in a browser, for free, with no account required to start, and it's been doing this reliably for fifteen years.

The free tier is genuinely generous for what it offers. One active project at a time, access to a library of over 260,000 3D models, and a 3D view that gives you useful spatial information even if it doesn't look stunning. If your goal is to figure out whether your dining table fits in your kitchen before you buy it, Floorplanner gets you there without charging you or asking for a credit card.

Where it falls short: the 3D rendering is basic, there are no AI features worth mentioning, and the one-project limit on the free tier becomes annoying quickly if you're working on more than one room. For professional use or anything requiring photorealistic output, you'll hit the ceiling fast.

Bottom line: The best free option if you just need accurate floor planning and don't care about visual polish. If you're new to room planning entirely, our step-by-step guide to designing a room online walks through the process from scratch.

Also great: Planner 5D (for beginners)

Planner 5D is the most approachable tool on this list. The drag-and-drop interface genuinely works the way it says it does, the tutorial prompts are helpful without being annoying, and you can produce a furnished 3D room in under ten minutes on your first try. For someone who has never used a design app and finds the idea slightly intimidating, this is the right starting point.

The AI features added in recent versions are a mixed bag. Plan recognition — which converts a photo of an existing floor plan into an editable digital layout — works well when the original floor plan is clean and clear. The smart furniture suggestions are fine but not sophisticated enough to replace any real decision-making. The 3D rendering on the free tier is noticeably lower quality than Coohom's; you'll need to upgrade for anything worth showing someone else.

The free tier lets you create unlimited projects and see them in basic 3D, which is more than Floorplanner offers in terms of project count. But the furniture catalog is smaller on free plans, and the most useful AI features sit behind a paywall.

Bottom line: Best for first-time users. If you've used any design tool before, you'll probably find it limiting within a few sessions.

For style inspiration only: RoomGPT

RoomGPT is a different kind of tool, and comparing it directly to the others is slightly unfair to everyone involved. You upload a photo of your existing room, pick a design style, and the AI generates a photorealistic redesign in seconds. There's no floor plan, no furniture sizing, no dimension input of any kind.

The results can be genuinely impressive as a starting point for conversations about style direction. If you're trying to decide between a Scandinavian and a mid-century modern direction, seeing both versions rendered from your actual room photo is more persuasive than a Pinterest board. What RoomGPT cannot tell you is whether any of those furniture choices are spatially feasible, whether the sectional it generated would actually fit, or whether the open shelving unit it added would block the natural light from your window.

We'd use RoomGPT at the very beginning of a project, to help narrow down a direction. We wouldn't use it to plan anything.

Bottom line: Great for inspiration, useless for planning. If you try to use it as a layout tool, you'll end up buying furniture that doesn't fit. For a deeper look at how AI design tools actually work, see our guide to the best free AI room design tools and what separates the useful ones from the gimmicks.

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Worth knowing about: RoomSketcher and Arcadium

RoomSketcher is worth a look if you're a professional who needs clean, exportable floor plans as a deliverable. The LiDAR scanning feature on compatible iPhones converts a physical room into an editable digital floor plan in a few minutes, which is a genuine time-saver for designers who spend a lot of time measuring spaces manually. The free tier is limited, and the tool is clearly designed to upsell you to a paid plan, but the core floor planning functionality is solid.

Arcadium earns a mention for removing friction better than anything else we tested. No account needed, open a browser, start designing in 3D immediately. The furniture library is smaller and the rendering less impressive than Coohom, but if you want to test a quick layout idea in five minutes without creating an account or downloading anything, Arcadium is the fastest path to a result.

The competition

HomeByMe has strong rendering quality and a well-curated branded furniture catalog. The free tier is too limited to recommend for most users — one project, basic 3D only — and the tool's strengths don't compensate for that enough to displace our main picks.

Homestyler is popular and has over a million 3D models in its library. We found the interface more cluttered than Coohom's and the AI features less precise, but it's worth testing if you find Coohom's learning curve too steep.

SketchUp Free is more powerful than anything on this list if you have the patience to learn it. It's not a beginner tool, the free version is browser-based with limitations, and we didn't include it here because it requires a meaningfully different skill level to use effectively.

What to look for in a room design app

The single most important question is whether you need to plan a layout or generate inspiration. These are genuinely different tasks, and different tools serve them better.

For layout planning, you need a tool that works at real scale. That means you should be entering actual room dimensions — not just dragging a room shape around — and the furniture you place should have accurate measurements attached to it. If a tool doesn't make you specify dimensions, it's an inspiration tool wearing a planning tool's clothes.

For inspiration, accurate dimensions don't matter. What matters is speed, variety of output, and how closely the AI can work from your actual room rather than a generic template.

Most people need both at different stages of a project. The most efficient path is usually to start with a photo-based tool like RoomGPT to settle on a direction, then move into a free room design tool like Coohom or Floorplanner to test whether that direction actually works in your space.

Frequently asked questions

Can I design a room online for free?

Yes. Coohom, Floorplanner, and Arcadium all offer meaningful free access to floor planning and 3D visualization. You'll hit limits on rendering quality and project count without paying, but you can complete a full room layout for free on all three.

What's the difference between a room design app and an AI room designer?

Most room design apps now market themselves as "AI-powered," but the AI means different things in different tools. In photo-based tools like RoomGPT, AI generates a new image of your room in a different style — fast and visually impressive, but spatially meaningless. In floor-plan tools like Coohom, AI generates a furnished layout that respects real dimensions and spatial constraints. The second type is more useful for actual planning; the first is better for inspiration.

Which room design app is best for interior designers?

For professional use, Coohom is the strongest browser-based option: accurate floor plans, photorealistic rendering, and a furniture library that includes real branded pieces. RoomSketcher is worth adding if you regularly need to deliver clean exported floor plans as a client deliverable.

Do I need to download anything?

No. Coohom, Floorplanner, Planner 5D (web version), RoomGPT, and Arcadium all run in a browser. No installation required.