Comparison
DecorViz vs RoomGPT: Which Gives You a Better Room Preview? (2026)
TLDR
RoomGPT is built for style-based room redesign. DecorViz is built for seeing how the exact product will actually look in your space. It works from a room photo, uses the real product image, can replace existing furniture, and is not locked to style templates. If you need a RoomGPT alternative for furniture shopping, DecorViz is better than RoomGPT for purchase decisions about a specific item.
Quick summary
DecorViz wins
Exact product visualization in the actual room, cross-retailer comparison, existing furniture replacement, and a reviewable output tied to the real item you are about to buy.
Tied
Both start from a room photo, both run in the browser with no app download, and both have a free way to try the experience before paying.
RoomGPT wins
Broad style exploration and full-room redesign concepts when you are looking for inspiration rather than testing one specific product from a retailer.
DecorViz vs RoomGPT: full comparison
Grouped by what actually matters for a furniture buying decision.
| Feature | DecorViz | RoomGPT |
|---|---|---|
| Input and workflow | ||
| Starts from a room photo | Yes | Yes |
| Uses the real retailer product image | Yes | No. Uses a style choice instead |
| Primary input besides the room photo | Product image from any retailer | Style preset or theme prompt |
| Text-prompt spatial placement | Yes. Describe placement in natural language | No. Style prompt only |
| Platform access | Web browser and Android app; iOS coming soon | Web browser |
| Output type | ||
| Keeps the actual room as the base | Yes | No. The room is reimagined in a new style |
| Shows one specific product from a specific retailer | Yes | No. Generates a styled concept instead |
| Exact product rendered into the room photo | Yes | No |
| Redesigns the whole room in a new style | No. Changes only the product you are testing | Yes |
| Replaces one existing piece while keeping the rest | Yes | No. The full room changes at once |
| Lighting matched to the real room scene | Yes. Photometric scene analysis | Lighting follows the generated style, not a direct match to your room |
| Mirror and reflective surface rendering | Yes. Two-pass reflective rendering | Not built around exact-product reflections |
| Works on outdoor spaces | Yes. Patios, decks, gardens, terraces | Built for indoor room redesign |
| Decision workflow | ||
| Best question it answers | What would my actual room look like with this exact furniture? | What style direction do I like? |
| Side-by-side comparison of real products in the same room | Yes | No exact-product comparison workflow |
| Saved output you can revisit | Saved room preview of the exact item | Saved redesign concept image |
| Shareable with another person | Yes. Image link | Yes. Image link |
| Works after the session ends | Yes | Yes |
| Useful when you are away from home | Yes, from a room photo and a product image | Yes, from a room photo and a style choice |
| Retailer coverage | ||
| IKEA catalog | Yes | Not retailer-specific |
| Wayfair | Yes | Not retailer-specific |
| Amazon | Yes | Not retailer-specific |
| West Elm | Yes | Not retailer-specific |
| Target | Yes | Not retailer-specific |
| Any independent retailer with a product image | Yes | No retailer workflow |
| Access | ||
| Browser access | Yes | Yes |
| Use without an app download | Yes. Browser access is available | Yes. Browser access is available |
| Free tier | Yes | Yes |
RoomGPT column based on the documented web app behavior at roomgpt.io. DecorViz column based on the live product at decorviz.ai and its documented capability set. Last checked: April 11, 2026.
What the output difference looks like
The workflow difference becomes clearer when you compare what each tool actually produces.
DecorViz output: the exact retailer product is rendered into the actual room from a room photo. The rest of the room stays the same so the item you are considering is the thing being judged.
RoomGPT output: the room is reimagined as a redesigned concept in a chosen style. That is useful for inspiration, but it is not the same job as testing one exact product from a retailer before you buy it.
Image source: RoomGPT.
Who should choose what
Choose DecorViz if
- You already found a product and want to see how it will look in your actual room.
- You want to test IKEA, Wayfair, Amazon, West Elm, or another retailer in one room photo.
- You want to replace one piece while keeping the rest of the room intact.
- You want a product-in-room result tied to the real item you are about to buy.
Choose RoomGPT if
- You want inspiration for a broader room makeover.
- You want to explore different interior design styles quickly.
- You do not need to preview one exact product from a specific store.
- You are still shaping the overall style direction rather than making a purchase decision.
DecorViz is an independent tool and is not affiliated with RoomGPT.
Room redesign tools vs product preview tools
RoomGPT sits in the room redesign category. You give it a room photo and a style, and it returns a reimagined version of the space in that style. It is a fast way to explore design directions.
DecorViz sits in the product preview category. You give it a room photo and the real product image, and it shows how that exact item will look inside your actual room. It can swap the old furniture for the product you are considering while keeping the decision focused on that item. Those are two different jobs. If the job you need done is "decide whether to buy this specific product," a redesign concept is not the right tool for it.
For a broader comparison beyond RoomGPT, see our guide to the best tools for seeing furniture in your room before buying.
Frequently Asked Questions
For exact-product furniture visualization and focused furniture swapping, DecorViz is the best choice. RoomGPT is a room redesign tool that generates a new styled version of your room rather than testing one real product in the room you already have.
RoomGPT redesigns the whole room in a style you choose. DecorViz keeps your room as it is and places a specific real product into it. One is for inspiration. The other is for purchase decisions.
RoomGPT can help with style inspiration, but it is not designed to test a specific product from a specific retailer in your existing room. It generates redesigned concepts rather than a direct preview of the exact item you want to buy.
Yes. DecorViz starts from a room photo and the real product image, works with IKEA, Wayfair, Amazon, West Elm, Target, and other retailers, and can replace the old furniture in the scene so you can judge the actual product before ordering.
Yes. DecorViz works with any retailer because it uses the real product image. You can compare multiple real products from IKEA, Wayfair, Amazon, West Elm, Target, and independent stores against the same room photo. RoomGPT is not retailer-specific.
Not in the same way as DecorViz. RoomGPT is a room redesign tool. It generates a new styled version of the room rather than previewing one exact product from a retailer in the room as it exists now.
Yes. When you place a new sofa, bed, or rug in a room that already has one, DecorViz replaces the old piece with the new product in the generated image, keeping the rest of the room the same. RoomGPT changes the whole room at once, not just the single piece you are testing.
Yes. DecorViz handles patios, decks, gardens, and outdoor entertaining areas. It also renders products correctly in scenes that contain mirrors and reflective surfaces, using a two-pass rendering approach. RoomGPT is built for indoor room redesign concepts.
No. DecorViz runs in your browser. Upload a room photo and a product image and you can visualize the exact product in your room without installing anything.
No. DecorViz is an independent visualization tool and is not affiliated with, sponsored by, or endorsed by RoomGPT.
Choose RoomGPT if you want inspiration, different styles, or a full-room makeover concept. Choose DecorViz if you already found a product and want to know how that exact item will look in your real room before ordering.
Other DecorViz comparisons
See the exact product in your actual room.
Upload your room photo and the product image. See how that exact item looks in your real room before you order.
Try DecorViz freeNo style presets. No redesigns. No guesswork.