AI Interior Design Tools, Scored: Google’s Top Pick Ranked Itself

The best AI interior design tool depends on the job: Spacely AI if you work from SketchUp or Revit, Interior AI for the most photorealistic client render, Planner 5D for floor plans, REimagine Home for real-estate staging, DecorAI for a cheap makeover on your phone. Every price below came off the vendor’s own page, most re-read on August 5, 2026, and three prices Google’s AI Overview has quoted here match no plan any vendor sells.

Updated August 2026. Twelve pricing pages opened. One 404. Two that never showed a price at all. One that lists ten prices for the same subscription.

The eight at a glance

Prices verified July 30, 2026. Spacely, Planner 5D, REimagine Home, Remodel AI and RoomGPT were re-read in full on August 5 and nothing had moved; Interior AI’s annual ladder was re-confirmed the same day. Home AI was added and priced on August 6. DecorAI is the one exception, and it turns out to be the interesting one. Scores are our judgment on documented evidence, not a lab benchmark.

Google’s top pick for this category ranked itself

Search “best ai interior design app” and Google’s AI Overview names a winner: Remodel AI, “Best overall and best free tier.” On July 30 it cited seven references across two domains, five of them pages on remodelai.io. Re-pulled August 5, the pool was eight references across four domains: remodelai.io four times, meltflexai.com twice, Planner 5D and DecorAI once each. Across both readings, not one cited source belongs to anybody who isn’t selling a tool inside the answer.

“Best overall” is not Google’s judgment. It’s the heading of a post on Remodel AI’s own blog, bylined Ryan H. · Founder of Remodel AI, where the entry reads “Remodel AI — Best Overall (9.2/10)”. He tested six apps, one of which he owns, and his own came first. Nothing in the AI Overview says so. The verdict arrives stripped of its author, wearing Google’s voice.

Google cites a second post from the same blog twice more in the same answer. That one hands Remodel AI 9.5/10 for the best free tier. Both self-scores are now inside Google’s recommendation.

The posts are not lazy, which is the uncomfortable part: weighted rubric, re-test cadence, feature matrix, sources cited. They look exactly like independent testing. That resemblance is the mechanism.

Organic results are barely better. Re-pulled August 5, the first eight ran a Reddit cluster, Apartment Therapy, Remodel AI’s blog again, Decorilla, both app-store listings for the same mobile app, RoomGPT and a Facebook group. Decorilla is a design service, and its own “10 Best Apps and Tools” ranks Decorilla second. That leaves one genuinely independent reviewer in eight, and it’s Apartment Therapy.

The head term is emptier still. Search plain “ai interior design” and no AI Overview fires at all: eight blue links topped by RoomGPT, the same vendor listicles, a downvoted Reddit thread (checked Aug 5, 2026). Nothing is occupying the citation slot for when the Overview switches on.

Three prices Google quotes that no vendor sells

It says Interior AI “requires a paid monthly subscription starting around $39.” Interior AI’s own table sells Pro at $49, or $29 billed annually. There is no $39 tier, and that sentence was still on the SERP word for word when we re-pulled it on August 5, 2026. The July 30 reading went further: it started DecorAI “at $4.99 per month” and quoted named credit prices for RoomGPT, which publishes none at all. Google didn’t invent the $4.99. DecorAI prints “from $4.99/mo” in its own comparison table, one scroll above plan cards that have never sold a $4.99 plan. The RoomGPT figures come from a rival’s blog rather than a checkout. Neither claim surfaced in the shorter August 5 text; the $39 did.

Then the coincidence nobody in this category mentions. Remodel AI and Interior AI both sell three annual tiers at $349, $599 and $1,199, for 1,000, 5,000 and 25,000 designs, with a Flux model on entry and Hyper Realism above it, and both cap parallel rendering at 4, 8 and 16 rooms on those same tiers. Same feature names, same numbers, same odd $1,199. Both pricing pages were open side by side on August 5, 2026.

Draw your own conclusion. Ours: the app whose blog Google treats as referee ships the same ladder as the app it ranks second.

How we scored this (and what we didn’t do)

We did not redesign a room in eight tools and grade the pictures. Anyone claiming they did should show you the pictures.

What we did: opened every vendor’s own pricing page and recorded what was there, including the 404; compared documented features, credit maths and licence terms; pulled the live SERP and AI Overview references three times across two dates; priced the one phone app in the top eight off Apple’s and Google’s own listings; read both Reddit threads Google ranks here in full, the r/HomeDecorating one three times; and checked the incumbent’s ranking post against the vendors it ranks. The tie-breaker that matters most, whether a tool edits your room or draws a new one, needs an artifact we don’t have.

Ratings are ours. No vendor saw a draft, nobody paid to be here, and the tool we rank fifth is the one Google calls best.

Best for designers working from CAD: Spacely AI

Spacely is the only tool here built for someone who already has a model: SketchUp, Revit, AutoCAD and Rhino go in through plug-ins, and a grey massing view comes out as something a client reacts to. Free forever gets 40 credits, high-resolution, watermark-free, commercially licensed: the only free tier here you could bill a client from. Personal is $20 a month billed at $240 a year for 500 credits, about 250 renders; Studio $40; Agency $80 (verified Jul 30 and Aug 5, 2026).

Skip it if you don’t own a CAD file. Planner 5D’s free tier does more, for nothing.

Best for the client-facing render: Interior AI

Interior AI is the original and still wins on output. Hyper Realism mode, gated to Premium and above, is the difference between a mood board and an image a client mistakes for a photograph. Pro is $49 a month, Premium $99, Ultra $199, each roughly halving yearly at $349, $599 and $1,199 (monthly verified Jul 30; the annual ladder re-read Aug 5, 2026). No free card on the table: you pay before you see your own room.

Skip it if you want to try before paying. A $15 DecorAI month or Spacely’s free credits gets you 80% of the answer.

Best for floor plans and layout: Planner 5D

Every other tool here restyles a photograph. Planner 5D understands a room as a room: walls, dimensions, a catalogue, a plan you can change. Its best AI feature isn’t style transfer, it’s the floor-plan converter: photograph a paper plan, get a 3D model.

The free plan is real: unlimited projects, web and mobile, half the catalogue, no expiry. Premium is $4.99 a month billed at $59.99 a year, or $19.99 monthly. Professional, with 4K renders and CAD export, is $33.33 a month at $399.99 a year (verified Jul 30, 2026).

Skip it if you want a photorealistic image in ten seconds. Planner 5D asks you to build the room first: that’s an evening.

Best for real-estate virtual staging: REimagine Home

REimagine Home is Styldod’s product and it shows. The feature list reads like an agent’s job description: empty a room, stage it, replace the lawn, swap the sky, batch a listing. It’s about photographs going live on Friday, not taste. Staging is also the one job on this page where the tool is the smaller half of the problem; the listing workflow around it decides whether the render ever earns anything.

It’s also the only vendor here that prints unit economics: Essential $19 a month for 30 credits at $0.63 each, Pro $36 for 200 at $0.19, Advanced $59 for 400 at $0.14, Agency $119 for 900 at $0.13. Five free designs, no card (verified Jul 30, 2026).

Skip it if you’re one homeowner with one room. At 30 credits the entry tier loses to DecorAI’s $15 unlimited plan.

Best breadth in one app: Remodel AI

Set aside how it topped this SERP: the product is real and the broadest thing here. Interiors across 30-plus styles, 11 exteriors, 10 gardens, staging, floor replacement, object removal, furniture swap, and wall paint keyed to Sherwin-Williams and Behr codes, which is the useful bit: a colour you can carry to a hardware store beats one you can only admire. It ships iOS and Android apps; interiorai.com links to neither store. Three free designs, then $29 a month billed at $349 a year, $49 at $599, $99 at $1,199 (verified Jul 30 and re-read Aug 5, 2026; the page renders with annual billing already selected).

Skip it if you’re deciding on the ranking that brought you here. Its author owns the winner, and the Google answer his posts feed quotes the runner-up a price that doesn’t exist. He may well be right about his app. He is not a referee.

Best for a cheap first look: DecorAI

DecorAI sells one idea at a price that makes the decision easy. Free gets three generations a day, standard definition, watermarked. $15 a month gets unlimited generations, 4K export, no watermark and commercial rights, or $99 for the year (verified Jul 30, 2026). For a homeowner who wants one room in twenty styles before choosing paint, that’s the best value here. It covers exteriors and gardens too, and it pitches virtual staging at agents. What it has no answer for is a floor plan or a CAD file: it restyles photographs, and that is the whole product.

Skip it if you need a number you can trust. Re-opened on August 5, 2026 from a European address, the same page still quoted “from $14/month” and “from $4.99/mo” in its comparison tables while the plan cards themselves had switched to PLN 69 a month and PLN 169 a year, under a banner counting down an 80%-off offer. We could not re-confirm the $15 from here. Four prices, two currencies, one product, one page.

Best for one free try: RoomGPT

RoomGPT is the tool everyone has heard of, built by one developer credited on its homepage as “Hassan,” claiming four million users. Upload a room, pick a style, get a redesign. As a ten-second demonstration that this works, it’s the cleanest door in.

As a purchase it barely exists. /pricing returns a 404, the homepage sells a “FLASH60” code for 60% off “all plans” without naming a plan or a price, and the plan list sits behind the login. Only the sign-in page states the free allowance: “you will get 1 generation for free” (verified Aug 5, 2026). The credit prices in circulation come from a competitor’s blog, so we won’t repeat them as fact (verified Jul 30, 2026).

Skip it if you need to budget. A discount code for an unpublished price is not pricing.

Best on a phone: Home AI

Home AI is the tool nobody writing these rankings mentions and almost everybody has installed. It holds two of the eight organic slots for this search on the strength of its store listings alone: 4.4 stars across roughly 987,000 Google Play reviews, 4.5 across roughly 157,000 on the App Store (read Aug 6, 2026). It does the phone version of the job, photo in and style out, plus cleanup, layout changes, exteriors and garden, and it belongs to HubX, an Izmir software company whose other apps include a tattoo generator, an AI music maker and a language tutor.

Its store description claims “over 50M users globally.” The download counter on the same page reads 10M+.

Its pricing is the strangest thing on this page, and it’s printed in public. Apple’s In-App Purchases block lists ten separate Pro SKUs at eight different prices: weekly at $4.99, $5.99, $6.99, $9.99, $12.99 and $14.99, and yearly at $19.99 and $39.99 (verified Aug 6, 2026). Two of the ten are duplicates at $4.99 and two more at $9.99, which is what a price test looks like from the outside. There is no single price for this app. There’s a range, and which end you’re shown isn’t your decision.

Skip it if you don’t want to be enrolled in a weekly subscription. Its own Google Play page carries the warning, in dated reviews we read there: “There is no portion of it that is free,” writes Janet Eskue, 1,268 readers marking that helpful; “it’s advertised as a 3-day trial, but the app didn’t work as promised. I canceled within an hour, yet I was still charged $9.99,” writes a reviewer signed M in June 2026. That $9.99 is one of Apple’s ten SKUs, and at a week it prices out at $519 a year for something most people open twice.

What Reddit actually says about AI interior design

Google stacks three Reddit threads into a single result here. The one it dates to April 2026 is an r/HomeDecorating post: Top 10 AI Interior Design Tools You Must Try in 2026. It sits at zero points, and its upvote ratio has read 33%, 32% and 28% across our three checks. The subreddit rejected it. The top-voted comment isn’t a recommendation but a refusal: “No thanks. AI use has a massive environmental impact and seems to just be brain rot for adults.” The poster’s own number one is a tool called Decory AI, and he comes back into the replies to defend it. Of 33 comments, four pitch products that aren’t on the list, and one opens “Built one of these, so I’ll out myself up front.” That disclosure came attached to the only useful thing there:

“The reason these threads feel like slop is most of these tools invent a room from scratch instead of editing yours. So you get ten gorgeous rooms that aren’t yours, and none of them actually help you decide.”

He’s a founder with an interest in that framing. He’s also right.

A second commenter with nothing to sell draws the same line from the other side: layout generation “doesnt quite seem to be there yet,” but “the AI vizualisation stuff is really good,” and his example is trying ten floor and tile combinations on a room that already exists. That is this category in one sentence, and it’s what our last FAQ answer says too.

One more thing the thread gives away. Asked whether any of his ten tools can take a CAD file or a rendering, the poster answers “No” and then names five products that aren’t on his list. Spacely AI is number five on that list, and it imports SketchUp, Revit, AutoCAD and Rhino. The people writing these rankings are not opening the products.

The other Reddit surface Google ranks here is What is the best app for creating interior design images with AI?, and it ends the way these threads keep ending: locked. At least six replies show as removed, and the moderator note explains why in the subreddit’s own words — no advertising, no solicitation, “and astroturfing” (read Aug 6, 2026). A question about which app to buy became unanswerable because too many answers were adverts.

What survived is worth more than the list it replaced, and it still isn’t clean. The most technical answer left standing rates Gemini’s Nano Banana above ChatGPT for room images, then spends its second half arguing for a product called Arcadium 3D. Even the comment the moderators kept is selling something.

The one that isn’t is a buyer’s post-mortem on a paid tool he’d already bought and been upgraded on: “I simply wanted to upload a pic, move stuff around, remove items, choose different paint schemes… Clearly this product is not what I was looking for.” He blames himself — “I think the problem is me.” He shouldn’t. That is the gap between what these apps advertise and what a homeowner actually wants to do, written by the only person in the thread who paid to find out.

The one test that separates these tools

So run his test before you pay anyone. Upload your actual room, ask for one change, then check whether your cabinets, window and counter are still there. Nobody is scored on that axis yet, us included, until the artifact above exists. Four minutes in a free tier will disqualify at least one tool on this page.

What free AI interior design actually gets you

Most answers to that search are trials wearing the word free. Only Planner 5D and Spacely AI have tiers with no expiry: unlimited projects on half the catalogue, and 40 commercially licensed credits. DecorAI renews three watermarked generations daily. Remodel AI gives three once, REimagine Home five, RoomGPT exactly one, Interior AI none (Jul 30 and Aug 5, 2026). Home AI’s download is free and the review Google Play surfaces first says the rest isn’t: “There is no portion of it that is free” (Aug 6, 2026).

FAQ

What is the best AI interior design app?

It depends on the job. Spacely AI for designers working from SketchUp or Revit, Interior AI for the most photorealistic client render, Planner 5D for floor plans, REimagine Home for real-estate staging, DecorAI for the cheapest unlimited plan at $15 a month (verified Jul 30, 2026).

Is there a genuinely free AI interior design tool?

Two, with no expiry date. Planner 5D’s free plan gives unlimited projects and half its furniture catalogue; Spacely AI’s gives 40 credits with no watermark and a commercial licence. DecorAI renews three watermarked generations daily. One-off allowances: Remodel AI three designs, REimagine Home five, RoomGPT one, Interior AI none. Home AI is free to download only.

How much does AI interior design software cost?

From $0 to $199 a month. Free at Planner 5D and Spacely, $15 for DecorAI’s unlimited plan, $19 to $119 at REimagine Home, $29 to $99 at Remodel AI billed yearly, $49 to $199 at Interior AI. Mobile apps bill weekly instead: Home AI’s Pro runs $4.99 to $14.99 a week, or $19.99 to $39.99 a year (Aug 6, 2026).

Can AI interior design tools move walls or change my layout?

No. Every tool here restyles what the camera can see: floors, walls, furniture, fixtures, light. None moves a wall or adds a window. For structural change you need a plan-based tool like Planner 5D, or an architect. These apps visualise style, not engineering.

Changelog

• 2026-08-06 — QA pass on the augmentation, verified independently of it. Both store listings were re-fetched: Apple’s ten Pro SKUs reproduce line for line, but they carry eight distinct prices, not the seven the draft counted — corrected in body, schema and artifact list. The Google Play figures were read off the listing for the first time rather than a SERP snippet, and moved: 4.4 stars over roughly 987,000 reviews, not 4.3 over 986,000, plus a 10M+ download band and three dated user reviews now quoted from source. HubX’s sibling apps were checked against the developer rail and the “calorie tracker” the draft named isn’t among them; the App Store’s “#2 in Graphics & Design” did not render on re-fetch and was dropped. The r/interiordesignideas thread re-read at old.reddit: locked, 37 comments, six removed stubs and the anti-astroturfing note all confirmed verbatim, though its score had already slid from 9 points to 7. One softening reversed into a sharpening: the surviving Nano Banana comment does have something to sell, and the page now says so.
• 2026-08-06 — Augmentation pass. Home AI added as the eighth tool and priced from Apple’s own listing: free download, ten in-app purchase SKUs, $4.99 to $14.99 weekly and $19.99 or $39.99 yearly. It had held two of the eight organic slots for this query since our first pull without being named here. The second Reddit thread, flagged as unmined at the last QA, was read in full: it is locked, at least six replies were removed, and the moderator note cites the subreddit’s anti-astroturfing rule by name. Two surviving comments quoted verbatim. Independently re-confirmed the same day and unchanged: Interior AI’s and Remodel AI’s matching $349 / $599 / $1,199 ladders with identical design counts and 4/8/16 parallel-render caps, Spacely’s free 40 credits and $20/$40/$80 annual tiers, REimagine Home’s $19/$36/$59/$119 with per-credit maths, Planner 5D’s $59.99-vs-$19.99 annual/monthly split, Remodel AI’s three free designs, and RoomGPT’s one free generation behind the sign-in. No existing figure moved.
• 2026-08-05 — QA pass, verified independently of the draft. Remodel AI’s and Interior AI’s pricing pages were opened side by side on the same day: the $349 / $599 / $1,199 ladder, the 1,000 / 5,000 / 25,000 design counts and the 4 / 8 / 16 parallel-render caps match on both, so the page’s central coincidence is now double-sourced rather than dated. The AI Overview was re-pulled and its Interior AI “$39” line confirmed word for word; its reference pool was confirmed at eight citations across four domains with no independent among them, and a second self-scoring post from the same vendor blog, awarding itself 9.5/10 on free tiers, was found inside it. Two errors were corrected: DecorAI does offer exteriors, gardens and virtual staging, and Remodel AI is our fifth-ranked tool, not our sixth. DecorAI was found geo-pricing in PLN behind an 80%-off countdown while still advertising in dollars, and its anti-pick now carries that. The Reddit thread was re-read in full, its quotes confirmed verbatim, its upvote ratio recorded at a third reading, and one unsupported detail removed.
• 2026-08-05 — Re-verification pass. Prices re-read live on Spacely, REimagine Home, Planner 5D, Interior AI and RoomGPT: no figure on this page changed. RoomGPT’s free allowance sourced for the first time, from its own sign-in page. SERP drift recorded: the AI Overview for “best ai interior design app” moved from seven references across two domains to eight across four, gaining a second vendor blog and still citing nobody independent, and its Interior AI “$39” claim was re-confirmed. The head term “ai interior design” was pulled for the first time and fires no AI Overview at all. Reddit thread re-read and the exact upvote percentage replaced with fuzz-proof wording. Remodel AI and DecorAI were not re-checked and keep their July 30 stamps.
• 2026-07-30 — Page created. Every price read live off the vendor’s own page for all seven tools, including RoomGPT’s absent one (/pricing 404). SERP recorded for “best ai interior design app”: the AI Overview fires with seven references across two domains, both vendors, five of them the incumbent’s own blog, bylined by that vendor’s founder, whose 9.2/10 self-score Google reproduces without attribution. Three of its price claims found unsupported. Keyword targets set from scratch: primary “ai interior design”, 8,100/mo, SD 48, $3.23 CPC.

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Independent, no paid placements. We verify every price on the vendor’s own site, we publish who should skip each tool, and we keep this changelog public. See how we score AI tools and the independence charter. More on the AI tools index and the pricing index. Related: AI tools for real estate agents, AI website builders, what Reddit recommends for AI image generators.