AI Interior Design — 2026 buyer guide
Free Alternative to RoomGPT, Interior AI, REimagineHome & Spacely AI
We compared the four biggest paid AI interior-design tools against ToolChamp on seven parameters. Here is the honest version — RoomGPT charges from around $9/mo for credit packs, Interior AI is now $29-$99/mo annual ($49-$199 monthly) with 50+ styles plus custom prompts, REimagineHome gives 3 free designs then $19/mo Essential with structural-lock and exterior restyling, and Spacely AI moved from unlimited to credit-based pricing in September 2025 (Starter $15/mo).
Table of contents7 sections
RoomGPT is the category pioneer — and 2026 pricing pages don't transparently publish the free-tier limits, leaving users to discover them mid-flow. Interior AI runs 29-199 USD per month and is the breadth leader on style presets. REimagineHome gives 3 free designs then prices in credit packs. Spacely AI Starter is a 200-credit pack at 19 USD. Every paid tool advertises "unlimited" somewhere; the free tier is genuinely free almost nowhere.
AI interior design in 2026 covers five different workflows: empty-room virtual staging, occupied-room restylisation, exterior + landscape redesign, conversational room editing, and brand-furniture staging. RoomGPT, Interior AI, REimagineHome, and Spacely each lead in a different one. We rate each on design quality, style range, architecture preservation, speed, free-tier generosity, privacy, and extras.
AI Interior Design compared at a glance
All products side-by-side on the same parameters and the same rubric. Detailed breakdowns are below.
| Product | Free tier | Cheapest paid | Style presets | Custom style | Room-type picker | Exterior | Virtual staging | Edit / mask mode | API | Mobile app | Commercial use | Signup | File retention | Overall |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RoomGPT | 1-2 trial credits | $9/mo Basic (30 credits) | Not exhaustively published on the public landing | Not publicly verified | Not publicly verified | No | Limited | Not publicly verified | No | No | Not publicly stated | Yes | Not publicly stated | 2.7 / 5 |
| Interior AI | No meaningful free quota verified | $29/mo yearly Pro ($49/mo monthly) | 50+ plus custom prompt | Yes (write your own prompts; remix styles) | Yes (30+ room types after signup) | Yes (interiors, exteriors, gardens) | Yes (Premium) | Yes (Premium edit designs) | No public API | No native app; browser works on phone | Paid only | Yes | Stored in account history; not used for training per FAQ | 3.9 / 5 |
| REimagineHome | 3 free designs, no credit card | $19/mo Essential (30 credits) | Not exhaustively published + prompt + chat | Yes (conversational + moodboards) | Yes | Yes (front, landscape, backyard) | Yes | Yes (refine specific elements without restarting) | Enterprise / partner unclear | No native app | Paid plan dependent | Yes | Auto-deleted after 30 days unless saved | 3.7 / 5 |
| Spacely AI | 40 trial credits | $12.75/mo yearly Starter ($15/mo monthly) | Not exhaustively published; broad workflow | Yes | Yes | Yes (Landscape Render, April 2026 update) | Yes (Auto Furnish) | Yes (Point & Edit) | Business: private API key | No native app | Paid; free trial license unclear | Yes | Not publicly disclosed in indexed pages | 3.3 / 5 |
| ToolChamp | Unlimited, no signup, no watermark | N/A — fully free | 6 (Modern / Scandinavian / Industrial / Bohemian / Japanese / Luxury) | No | No | No | No | No | No | No | Yes (free; commercial use included) | No | Deleted post-job | 3.4 / 5 |
Scroll horizontally to see all columns. Highlighted row is the free option benchmarked against the paid leaders.
How each interior design stacks up
Each product is rated 1–5 stars on seven parameters using the same rubric. Overall score is an unweighted average.
RoomGPT
The category pioneer (by Hassan El Mghari / Nutlope) with open-source history and broad name recognition. Historical pricing Basic $9, Standard $19, Pro $29 monthly credit packs. The current SaaS at roomgpt.io does not expose a full pricing table publicly; the original open-source GitHub repo is the 'previous version'.
Scorecard
Strengths
- Early users praise the concept as useful for visualising different room themes before renovating.
- The open-source predecessor on GitHub created strong developer trust and discoverability — anyone could clone and self-deploy.
- Strong category recognition and a large claimed user base ("over 2 million users" per official testimonials).
- Simple consumer workflow: upload one room photo and get inspiration renders without learning 3D software.
Honest weaknesses
- Trustpilot reviews (small sample) complain about poor generation quality and credit waste.
- Bathroom and small-room results can produce unrealistic scale and object placement per recent user reports.
- Pricing visibility is weak because current plan details are not fully public before login.
- Privacy / retention / training-use terms are less publicly transparent than competitors.
Pricing
Free trial of 1-2 credits; Basic $9/mo (30 credits); Standard $19/mo (100 credits); Pro $29/mo (200 credits); enterprise not publicly listed
RoomGPT.io does not expose a full pricing table on the public landing page; the current page shows a FLASH60 60%-off promotion but not the underlying plan table. Third-party current comparison pages still report the historical $9 / $19 / $29 credit-pack structure, so treat those figures as lower-confidence than the live pricing UI shows after login. The GitHub repo is the 'previous open-source version'; the current paid SaaS code is closed.
Capabilities
- Input
- Not exhaustively published
- Output
- Not exhaustively published; reviewer references suggest low-resolution PNG
- Batch
- Not publicly documented
- API
- No verified public API
Modes / specializations
AI room restylisation from one uploaded room photo · Historical open-source version used ControlNet-style layout conditioning; current SaaS underlying model is not disclosed · Style count historically 9-15+, current exact 2026 count not publicly visible · Architecture preservation is intended but reviewer reports include layout-shift failures on certain rooms · Broad category recognition and indie-founder credibility from the original open-source launch.
What real users say
"This is incredible, you do not need an interior designer anymore."
"Bath came out the size of a dolls bath."
Our verdict
RoomGPT is the right tool when you want to try the category pioneer that started the AI interior-design space — and you're comfortable signing up to a SaaS with less-than-transparent public pricing and privacy terms. It is the wrong tool when you want feature breadth (Interior AI wins), real-estate pro workflows (REimagineHome wins), or a designer / architect canvas (Spacely AI wins). For most 2026 buyers, the original brand cachet is no longer enough.
Who it's for: Curious users who specifically want to try the original category pioneer, indie-hacker / open-source fans interested in the GitHub predecessor, and anyone who already has a RoomGPT account from the early days.
Interior AI
The feature-breadth leader (by Pieter Levels). 50+ styles, 30+ room types, custom-style prompts, 3D Vision for construction preservation, virtual staging, exterior + garden restyling, wall painting, SketchUp screenshots, walkthrough videos, and edit + paint + upscale modes on Premium. Pricing reset in 2026: Pro $29-$49/mo, Premium $49-$99/mo, Ultra $99-$199/mo.
Scorecard
Strengths
- Best style breadth in this comparison: 50+ styles and 30+ room types unlock after signup.
- Custom-style prompts and style remixing are real differentiators vs fixed-preset tools.
- Broad creative suite: virtual staging, Sketch2Image, SketchUp screenshots, wall painting, lighting changes, walkthrough videos, VR.
- Fast — official FAQ states about 25 seconds per interior design.
Honest weaknesses
- Recent Reddit complaint: buggy output, poor performance, refused refund / support response.
- Trustpilot rating is low with mostly 1-star reviews (sample is small).
- Pricing has moved up in 2026; casual users may find $49/mo monthly Pro expensive.
- No meaningful free tier — payment required to use.
Pricing
No meaningful current free quota; Pro $49/mo monthly ($29/mo yearly $349/yr); Premium $99/mo monthly ($49/mo yearly $599/yr); Ultra $199/mo monthly ($99/mo yearly $1,199/yr)
The old '$19/mo Pro' framing is stale. The current public page shows $49/mo monthly Pro or $29/mo billed yearly, with bigger Premium and Ultra tiers. Premium unlocks edit designs, virtual staging, upscaling, paint walls, lighting changes, people, Google Lens, walkthrough videos, add furniture, and VR walkthrough. Pro uses the Flux model; Premium and Ultra use the Hyper Realism model per the live pricing page.
Capabilities
- Input
- JPG, PNG, WebP, AVIF (HEIC not supported)
- Output
- Plan-dependent low / medium / ultra quality; exact pixels not stated
- Batch
- Yes — up to 4 / 8 / 16 rooms in parallel by plan
- API
- No public self-serve API
Modes / specializations
AI room restylisation with 3D Vision mode for maintaining current construction · Flux model on Pro; Hyper Realism on Premium and Ultra · 50+ interior styles after signup · 30+ room types after signup · Custom-style prompts (write your own design prompts; remix styles) · Empty-room support via Virtual Staging AI · Exterior + garden restyling · Wall painting (Premium) · Edit designs (Premium) · Upscale (Premium) · Lighting changes · Walkthrough videos and VR walkthrough (Premium) · SketchUp screenshot workflow · Google Lens integration · Sketch2Image · Parallel multi-room generation by plan · Account-based storage; Ultra has unlimited render storage.
What real users say
"Impressive to see several versions of your interior in few clicks."
"It was buggy and performed poorly."
Our verdict
Interior AI is the right tool when you want the broadest style range and custom-prompt support — 50+ styles, 30+ room types, plus the ability to type your own style description — and you can budget $29-$99/mo annual. It is the wrong tool when you want a free trial without payment (no meaningful free tier verified), when commercial use on the free path matters, or when you need formal compliance posture for real-estate client work.
Who it's for: Designers, design enthusiasts, and architecture-curious users who want the broadest style and custom-prompt surface and are happy paying $29-$199/mo. Power users running parallel multi-room workflows.
REimagineHome
The real-estate / pro choice (by Styldod). 3 free designs, then Essential $19/mo (30 credits), Pro $36/mo (400), Agency $119/mo (900). Structural lock is core, plus exterior restyling, landscaping, virtual staging, shoppable real-product designs, conversational refinement, before / after slider, and CRMLS / REcore real-estate integration. Uploaded images auto-deleted after 30 days unless saved.
Scorecard
Strengths
- Strongest pro positioning for real-estate agents: empty-room staging, structural lock, exterior restyling, landscaping.
- Real-product staging is a meaningful differentiator: designs use products available in the user's area and budget.
- More transparent free trial than competitors: 3 free designs with no credit card required.
- Region-constrained refinement and conversational agentic workflow enable iterative client-facing edits.
Honest weaknesses
- Credit pricing and plan naming appears inconsistent across official snippets versus April 2026 reviewer data.
- Free tier ends after only 3 designs.
- Privacy retention is 30 days by default unless saved (not deleted immediately).
- Essential tier excludes next-gen AI / high-resolution quality and real shoppable products — higher tiers needed for the headline features.
Pricing
3 free designs (no credit card); Essential $19/mo (30 credits); Pro $36/mo (400 credits); Agency $119/mo (900 credits); Enterprise contact-sales
Official pricing page title says plans and credits range from $14-$99/mo, but the retrieved table lines and reviewer data show Essential $19 / Pro $36 / Agency $119 in April 2026. The safest framing is that plans start around $19/mo after 3 free designs and exact prices may vary by promotion. Essential explicitly excludes next-gen AI / high-resolution quality and real shoppable products — higher tiers unlock those.
Capabilities
- Input
- Not exhaustively published
- Output
- Not exhaustively published
- Batch
- Credit-based; multi-room workflow likely for projects + agency
- API
- Enterprise / partner API available via CRMLS / REcore integration
Modes / specializations
What real users say
"First 3 designs are free."
"No next-gen AI or high resolution quality."
Our verdict
REimagineHome is the right tool when you are a real-estate agent, pro stager, designer with clients, or AirBnB host — and you need structural lock + exterior + landscaping + real-product staging + before / after slider + team workspaces. It is the wrong tool when you only need one or two designs casually; 3 free designs is too few for repeat use and Essential at $19/mo for 30 credits is sized for active workflows.
Who it's for: Real-estate agents, virtual stagers, interior designers managing client projects, AirBnB hosts restyling listings, landscape designers, and pro stagers needing structural lock + exterior workflows.
Spacely AI
The designer / architect choice. Infinite Canvas, Project Folders, SketchUp Extension, 4K Enhance Quality, Realistic Render, Point & Edit, Empty the Room, Landscape Render. Moved from unlimited to credits September 23 2025. Starter $15/mo (200 credits ~100 renders), Studio $45/mo (640 credits ~320), Business $120/mo (1,800 credits ~900 + private API key).
Scorecard
Strengths
- Strong pro feature surface: Realistic Render, Auto Furnish, Style Transfer, SketchUp plugin, 4K Enhance Quality.
- Better for designers and architects than simple consumer restylers because of canvas, project folders, workflow extension support.
- April 2026 updates show active development: Landscape Render, Infinite Canvas, Point & Edit, Empty the Room.
- Annual pricing brings Starter to $12.75/mo — competitive entry point for active designer use.
Honest weaknesses
- Pricing changed from unlimited to credit-based in September 2025 — frustrated existing users.
- Starter queue can take 5 minutes per result (Studio priority is under 3 minutes).
- Trustpilot sample is tiny but negative, complaining about poor results and unresponsive support.
- Official privacy / retention / training-use language is not visible in publicly indexed pages.
Pricing
40 trial credits free; Starter $15/mo monthly ($12.75 yearly); Studio $45/mo monthly ($38.25 yearly); Business $120/mo monthly ($102 yearly)
Spacely moved from unlimited access to credit-based subscriptions on September 23 2025. Renders cost around 2-8 credits each depending on operation per a hands-on review. Starter standard queue: result in 5 minutes; Studio priority is under 3 minutes per third-party testing. Business tier unlocks a private API key. Annual billing lowers per-month equivalent prices.
Capabilities
- Input
- Not exhaustively published
- Output
- 4K download on Pro / Enhance Quality 4K
- Batch
- Credit-based; multi-project organisation via Project Folders + Infinite Canvas
- API
- Yes — Business: private API key
Modes / specializations
What real users say
"Landscape Render brings AI-powered visualization to the space around the building."
"The results were shockingly poor."
Our verdict
Spacely AI is the right tool when you are a designer or architect who lives in SketchUp, wants an Infinite Canvas + Project Folders workflow with 4K render output, and values active feature development (Landscape Render, Point & Edit, Empty the Room shipped in April 2026). It is the wrong tool when you want unlimited usage (the September 2025 pivot ended that), when you need fast turnaround on Starter (5-minute queue), or when you need transparent public privacy and compliance posture.
Who it's for: Designers, architects, and design-firm teams who use SketchUp, need 4K render output, want canvas-based multi-project organisation, and can budget at the $12.75-$120/mo subscription level.
ToolChamp AI Interior Design
Six style presets (Modern / Scandinavian / Industrial / Bohemian / Japanese / Luxury) with icon tile picker, 1-4 designs per submit, generation seed shown per design for reproducibility, original room thumbnail strip + side-by-side designs grid in result UI, PNG output with per-design and batch ZIP download, commercial use included — free, no signup, no watermark, no daily cap.
Scorecard
Strengths
- Fully free with no signup, no email, no credit card, no watermark, no daily cap, no upsell modal — the only AI interior-design tool in this comparison with that combination.
- Six style presets cover the most-common interior aesthetics: Modern, Scandinavian, Industrial, Bohemian, Japanese, and Luxury — each with a clear icon in the picker tile grid.
- Architecture preservation is the headline feature: the AI keeps walls, windows, ceilings, and floor plan identical while restyling furniture and decor in the chosen style.
- Generation seed shown on every design card for reproducibility — useful for re-generating a specific look later.
- Original room thumbnail strip + side-by-side designs grid in the result UI lets users compare 2-4 redesigns at a glance.
- Empty rooms work well — the AI fills the space with style-appropriate furniture and decor.
- Files uploaded then deleted post-job — no retention beyond the processing window. No prompts or images used for training.
- Commercial use is allowed — generated images can be used in real-estate listings, design briefs, or marketing.
- HEIC and HEIF support means iPhone room photos work directly with no conversion (Interior AI does not support HEIC).
Honest weaknesses
- Only 6 style presets — Interior AI ships 50+ plus custom-style prompts. ToolChamp covers the most-used six but loses on breadth.
- No custom-style / prompt-driven style — cannot type 'Mid-Century Modern with green accents'. Interior AI is the category leader here.
- No exterior / façade / landscape restyling — REimagineHome and Spacely AI offer this; Interior AI Premium also.
- No virtual staging with specific furniture brands — the AI fills with style-appropriate furniture but not branded products.
- No region / mask edit mode — the AI restyles the whole room. REimagineHome and Spacely AI offer per-element editing.
- No iterative refinement on a specific design — to iterate, regenerate from the original photo with a different style.
- 1024 px input and output cap — for 4K marketing renders, upscale the output with the separate AI Image Upscaler tool.
Capabilities
- Input
- PNG, JPG, JPEG, HEIC, HEIF (HEIC auto-converted in browser)
- Output
- PNG only at up to 1024 px longest edge; per-design download + batch ZIP for multi-design jobs
- Batch
- One source room photo per submit; 1-4 designs per submit
- API
- No — UI only
Modes / specializations
Our verdict
ToolChamp lands at 3.9/5 — tied first with Interior AI (3.9/5), ahead of REimagineHome (3.7/5), Spacely AI (3.3/5), and RoomGPT (2.7/5). The shape: Free-Tier Generosity 5/5 + Privacy 5/5 + Design Quality 4/5 + Architecture Preservation 4/5 + Style Range 4/5 — held back by Extras 2/5 (no exterior staging, no virtual staging with brand-specific products, no custom prompts, no region edit mode). Tying Interior AI — the category leader on style breadth — comes down to the equal-weighted free + privacy axes: ToolChamp is the only tool in this comparison with unlimited free use, no signup, no watermark, and commercial use included. For breadth of styles, exterior workflows, or conversational style refinement, Interior AI or REimagineHome are right; for the everyday 'show me this room in three different styles' workflow, the free path here is genuinely competitive.
Who it's for: Anyone who wants to see a room in a different style today — homeowners planning a redecoration, renters visualising a space, hobbyists exploring aesthetics, students designing a dorm, AirBnB hosts iterating on listing photos, or curious users testing the AI interior-design category for the first time — and doesn't want to sign up to RoomGPT, pay $29-$199/mo for Interior AI, exhaust 3 free designs on REimagineHome, or buy 200 credits for Spacely AI Starter.
Which free interior design should you pick?
Common situations and the product that actually fits them.
You want the broadest style range and custom-prompt support — 50+ styles, 30+ room types, plus type your own style description
Interior AI
Pro $29-$49/mo or Premium $49-$99/mo unlocks edit designs, virtual staging, upscale, paint walls, lighting changes, walkthrough videos, and VR walkthrough. About 25 seconds per design per the official FAQ. 3D Vision mode for construction preservation.
You are a real-estate agent, virtual stager, or designer with clients who need structural lock + exterior + shoppable real-product designs
REimagineHome
3 free designs with no credit card. Essential $19/mo (30 credits) or Pro $36/mo (400 credits). Structural lock is core. Exterior, landscaping, real-product staging, conversational refinement, before / after slider, and CRMLS / REcore real-estate integration. 30-day auto-deletion unless saved.
You are a designer or architect who lives in SketchUp and wants 4K render output with canvas + project folders
Spacely AI
Starter $12.75/mo yearly ($15/mo monthly). Infinite Canvas, Project Folders, SketchUp Extension, 4K Enhance Quality, Realistic Render, Point & Edit, Empty the Room, Landscape Render (April 2026 updates). Business $120/mo unlocks a private API key.
You want to try the original category pioneer with broad name recognition and open-source history
RoomGPT
Basic $9/mo (historical, 30 credits) is the lowest entry price in this category. RoomGPT launched the AI interior-design space in 2022 and has the broadest brand recognition. Public pricing and privacy details are less transparent than the other three competitors.
You want a quick room restylisation today without subscribing or signing up
ToolChamp
Free, no signup, no watermark, no daily cap. Upload one room photo, pick one of six styles (Modern / Scandinavian / Industrial / Bohemian / Japanese / Luxury), generate 1-4 designs. Per-design seed for reproducibility, side-by-side grid for comparison, commercial use allowed.
You are a homeowner, renter, or hobbyist exploring a redecoration on a budget
ToolChamp
Six common style presets cover most consumer redecoration questions. No credit cap means you can try every style on the same room without watching a usage counter. Commercial-use rights mean the output works for AirBnB listings or design-brief PDFs as well as personal use.
Frequently asked questions about ai interior design
Quick answers to questions that come up before, during, and after picking a tool.
Is there a genuinely free alternative to RoomGPT, Interior AI, REimagineHome, and Spacely AI for AI interior design?
Why does ToolChamp land at 3.4/5 — middle of pack — rather than first or last?
Which six styles does ToolChamp support?
Does ToolChamp preserve the room layout, or does it generate a different room?
How long does ToolChamp take to generate a design?
Can I use ToolChamp-generated designs commercially?
Why is the input limit only 1024 px?
Do these tools train AI on my room photos?
How to restyle a room for free in ToolChamp
Free in-browser AI interior design with 6 style presets and architecture preservation — no signup, no watermark.
Step 1
Upload a room photo
PNG, JPG, HEIC, or HEIF up to 10 MB and 1024 px. Wide-angle daytime photos with even lighting work best.
Step 2
Pick a style + design count
Modern / Scandinavian / Industrial / Bohemian / Japanese / Luxury. 1–4 designs per submit. The architecture (walls, windows, floor plan) is preserved.
Step 3
Compare + download
Side-by-side designs grid lets you pick the best. Per-design PNG or batch ZIP download. Commercial use included on the free workflow.
The honest summary
There is no single best AI interior design tool for every situation. Interior AI (3.9/5) wins the category on feature breadth — 50+ styles, 30+ room types, custom-style prompts, 3D Vision construction preservation, virtual staging, exterior + garden restyling, wall painting, SketchUp screenshots, walkthrough videos, and VR. REimagineHome (3.7/5) wins for real-estate agents, virtual stagers, and pro designers who need structural lock + exterior + landscaping + shoppable real-product staging + before / after slider + team workspaces. Spacely AI (3.3/5) wins for designers and architects who live in SketchUp and want 4K rendering + Infinite Canvas + Project Folders + private API. RoomGPT (2.7/5) is the original category pioneer with broad brand recognition but less transparent public pricing and privacy.
But for the case where none of those fit — a homeowner planning a redecoration, a renter visualising a space, a hobbyist exploring aesthetics, a student designing a dorm room, or an AirBnB host iterating on listing photos — ToolChamp ties middle of pack at 3.4/5 because the core workflow (upload room, pick style, generate restylisation) is what every competitor offers, and ToolChamp covers it well. Free-Tier Generosity 5/5 + Design Quality 4/5 + Architecture Preservation 4/5 + Privacy 4/5 keep us competitive; Speed 2/5 (3-4 minutes per design) and Extras 2/5 (no exterior, virtual staging, custom prompts, edit mode, API) keep us behind the leaders. We sacrifice 50+ styles (use Interior AI), exterior restyling (use REimagineHome or Spacely), pro real-estate workflows (use REimagineHome), 4K rendering (use Spacely AI or upscale separately), custom-style prompts (use Interior AI), and edit / mask refinement (use REimagineHome or Spacely) to keep the core workflow free, unlimited per session, and frictionless.
If you design interiors for a living, pay for Interior AI Premium or Spacely AI Studio. If you list real estate or stage AirBnBs, pay for REimagineHome. If you want the category pioneer's brand, try RoomGPT. If you have one room and want to see what it could look like today, you don't need any of those. Pick the tool that matches the workflow — and remember that ToolChamp beats the original category pioneer (RoomGPT 2.7 vs ToolChamp 3.4) on the equal-weighted rubric because free + simple + private + commercial-use-included is worth more than brand recognition when the actual product hasn't kept its public transparency current.
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