Comparison
Best AI Interior Design Apps: 5 Tools Compared
The same five names come up every time. Here is what each one is actually for, and the four questions that decide whether it is worth paying for.
Four Questions That Decide It
Almost every AI interior tool can produce one attractive image from one photo. That is the easy part, and it is why screenshots from different apps look interchangeable. What separates them shows up on the second and third attempt, when you want the same room with one thing changed.
So judge on four things, in this order. It is a better use of an afternoon than comparing style galleries.
- Does the architecture survive? Walls, windows, doors and camera angle should stay where they are. A render that moves a window is a different room, not a design proposal.
- Can you edit a result you already like? If the only control is a style dropdown, every change starts from zero and you will never converge on a decision.
- What does one usable image cost? Not the plan price — divide it by the images you would actually keep. A 4-credit run you use once is four times the price of a 1-credit run you use once.
- Can you tell it what to keep? A fireplace, a steel window, a sofa you already own. Tools that only accept a style name will quietly replace the things you cannot change.
RoomFloat is our product, so read its row with suspicion. The four questions above are the ones we designed against, which is exactly why they are the ones we would use to judge us.
The Five, Side by Side
Everything in the table comes from each vendor's own pages, read on 2026-11-06. We did not buy all five plans, so treat the price column as a starting point rather than a quote — check the vendor's page before you commit.
| Tool | Best for | What it advertises | What to check first |
|---|---|---|---|
| RoomFloat | Iterating on one room until it is right | Structure lock on by default, instruction-based edits on a render you picked, 10 presets plus free-text style, 4 renders per run | Preset count is deliberately small — if you want 40 styles to browse, this is not it |
| Interior AI | Breadth of styles | A large preset catalogue, plus sketch input, virtual staging and short walkthrough video | Breadth is the product; deciding which of 40 looks you want is left to you |
| ReimagineHome | One-click jobs per photo | Single-purpose tools — empty the room, swap one object, repaint a wall, day to dusk | Credit-metered per action, so a session of small changes adds up quickly |
| Collov | Agents and brokerages | AI staging on a subscription (from $19/month for 60 photo credits, $49 for 150), unlimited regeneration, furniture removal, plus optional human designers | The subscription is the entry point; the human design service is priced separately |
| RoomGPT | A first look, fast | Upload a photo, choose the room type, get a set of options — the shortest flow of the five | Few controls beyond room type, so it answers "what could this be" rather than "make this exact change" |
Two patterns are worth naming. First, the tools built for agents (Collov, and ReimagineHome's staging tools) sell subscriptions, because an agent stages listings every week. The tools built for homeowners sell packs or free runs, because a homeowner redesigns one room once. Second, almost nobody sells per-image above the entry tier — the pricing is designed to make the middle plan look obvious, which is a reason to buy the smallest pack that covers one room.
What Separates a Tool From a Toy
The failure mode in this category is not ugly output. It is drift: you upload a photo, get something plausible, ask for one change, and get back a room that is subtly a different room — a window moved six inches, a doorway gone, the ceiling lowered. It looks fine in a thumbnail and is useless the moment you compare it to the photo you took.
The fix is a structure constraint held during generation, not a prompt that politely asks for one. When you test a tool, test this specifically: put a photo with an awkward feature in front of it — a chimney breast, an off-centre window, a radiator you cannot move — and see whether the feature is still there in the output. That single test tells you more than any style gallery.
The second differentiator is whether a result is a dead end. If the only lever is "try again", you are sampling, and sampling converges on nothing. Editing a specific render — keep everything, change the rug — is the difference between a preview and a working tool. Ask any app you are trialling to make one small change to an image it just produced, and watch whether it starts over.
Which Should You Pick
If you want one good idea
Use whichever free run is quickest, most likely RoomGPT or a free pass elsewhere, and accept that the output is a mood rather than a plan. Do not subscribe on day one: you will not know what you want until you have seen three directions. Save the images that surprise you and note what they have in common — that is your brief.
If you are redoing one room properly
Pick on iteration, not on style count. You will produce ten images and keep one, so the tool that lets you keep the room and change one thing at a time wins even if its presets are duller. A small pack — 40 renders at $9.90 is the shape of it — is enough to explore one room to a decision; a subscription is not, because you cannot cancel a subscription credibly in a week.
If you are staging listings
You need volume, no watermark, a commercial licence and a disclosure you can put in the listing. That last one matters more than it sounds: every major US MLS allows virtual staging and every one of them requires it to be disclosed. Ask any vendor where the disclosure goes before you upload a client's photos — and keep the original empty-room shots on file, because some boards ask for them.
How This Comparison Was Put Together
Each vendor's own marketing and pricing pages were read on 2026-11-06, and the table reports what those pages claim. We did not run one photo through all five and score the outputs — most of these tools gate real output behind an account or a credit, and a scored bake-off we had not actually run would be worth less than no table at all.
What we can speak to with first-hand knowledge is RoomFloat, because we build it, and the failure modes described above, because they are what the product exists to avoid. Prices and free tiers in this category change every few months; if a number here disagrees with a vendor's page, the vendor's page is right.
Questions people ask before they upload
Which AI interior design app is actually free?
Most of them are free for the first image and metered after that. RoomFloat gives two watermarked renders per 24 hours with no account; RoomGPT asks you to sign in and gives you a starting allowance; the subscription tools usually show a watermarked preview before asking for a card. Free is a trial size almost everywhere, not a way to finish a room.
Can AI interior design keep my actual room?
It can, if the tool constrains structure during generation rather than asking for it in the prompt. Test with a photo that has a feature you cannot change — an off-centre window, a chimney breast, a radiator — and check that the feature survives. If it moves, no amount of style tuning will make the output usable for a real decision.
Do I need to know how to prompt?
No, and a long prompt is usually worse than a short one. The controls that matter are the ones with a fixed meaning — room type, style, whether to keep the structure — plus one sentence about the change you want. "Make the cabinets matte black, keep everything else" beats a paragraph of adjectives.
How much should one usable image cost?
Budget in runs, not in images: you will generate several and keep one. At 40 renders for $9.90, a run of four costs about a dollar, which is the right order of magnitude for a homeowner exploring one room. If a tool quotes per image, check whether a run counts as one image or four.
Is virtual staging allowed on MLS listings?
Yes on all major US MLSs, provided the images are disclosed as virtually staged. The wording differs by board and does get revised, so put the disclosure in the public remarks and, where the MLS supports it, in the photo watermark — and check your own board's current photo policy rather than a blog post, including this one.
What resolution do I need?
1000×1000 is enough for a listing photo and for deciding on a layout. Go to 2K only for print or for a portal that upscales; above that you are paying for pixels nobody sees on a phone, which is where most listings are viewed.
Prices and free-tier limits were checked on 2026-11-06 and change often — confirm on each vendor's pricing page before you buy.