Best AI Interior Design App Free in 2026: 9 Apps Compared

Planner 5D is our pick for homeowners who want a real plan, not just a pretty picture. The free plan covers unlimited projects, 2D floor plans, and 3D views, so you can test whether a sofa fits, a door swings clear, and a table leaves walking space. That measured view matters more than style when you are buying furniture. Paid plans add the full catalogue, higher renders, and AI studio credits. The catch is that AI photo tools sit behind paid credits, so treat Planner 5D as a planner first and a restyler second. For a room redo with real dimensions, start here.

Homestyler suits users who want to build a room in 3D and see a lifelike render without paying first. The free plan covers cloud-based planning and basic renders, with a large library of models and materials to try. That combination beats photo-only tools when you need to move walls, try layouts, and compare furniture placements. The trade-off is render quality and watermarks. Sharper renders cost extra, and watermark-free output needs a paid plan, so check those costs when a render is for a client or a listing. For personal planning, the free tier goes a long way.

RoomGPT suits anyone who wants a quick answer to a simple question, such as how a living room might look in a warm modern style. Upload a photo, pick a style, and get a restyled image in minutes, with no floor plan work needed. That speed makes it a good first test for colour, mood, and furniture direction. The catch is limits and accuracy. Free allowances are small and can change, and the result is a visual idea that may shift windows, scale, and layout. Use it for inspiration, then confirm sizes and colours with real samples and a planner app.

Interior AI suits users who want to try many styles on the same room photo. Style options cover modern, rustic, minimal, and more, and generation is fast enough to compare several looks in one sitting. That volume helps when you are stuck between two or three directions and want to see them side by side. The trade-off is the free tier. Free renders are limited and lower in resolution, so detailed decisions still need a paid plan or a planner app. Use the free renders to pick a direction, then refine with real furniture dimensions.

REimagineHome suits homeowners and agents who want fast restyles with simple edits. Upload a photo, pick a style, and refine with chat-style prompts, such as keeping the fireplace or changing only the sofa. Shoppable product ideas help move from an image to a shopping list. The catch is that free designs are a trial allowance, so the free tier ends after a few designs. Treat those free designs as a test, check scale and fixed features carefully, and only pay when you need regular restyles for listings or projects.

Spacely AI suits designers and agents who want to test staging and concept renders with trial credits. It covers photo restyles, sketch-to-render work, and 3D tools, which helps when a project moves from a rough idea to a presentation image. Trial credits let you judge output quality before paying. The trade-off is that trial credits are finite, so plan your test shots well and save the best outputs. For ongoing listing work, compare the credit pack cost with a planner tool that offers an ongoing free plan, since the right choice depends on volume.

IKEA Kreativ suits shoppers who plan to buy from IKEA and want to see real items in their own space. Using a phone camera, you can place true-to-scale IKEA furniture in your room, check fit, and build a shopping list from items that actually exist. That practical link to buying beats a generic AI image when a purchase decision is close. The catch is catalogue scope. You only preview IKEA products, and AI redesign availability can vary by region, so check the IKEA site for your country. If your shortlist is IKEA furniture, this free tool is the most useful on this list.

DecorMatters suits users who want to preview furniture in their room with augmented reality and browse community designs for ideas. AR placement helps judge scale and style in your actual space, while community rooms give starting points when you are unsure what to try. Room planning tools add a basic layout option alongside AR. The trade-off is AI depth. Photo restyle features are thinner than in RoomGPT or Interior AI, so use DecorMatters for furniture preview and ideas, and a photo tool for full room restyles. For renters testing a few pieces, that mix works well.

RoomSketcher suits users who need numbers, not just images. Floor plans can show measurements, room areas, and print-to-scale output, which helps when talking to a builder, an agent, or a contractor. That measured output sets it apart from photo restylers that change layout freely. The catch is the free plan, which is very limited, with only a small number of credits and no measurements on the free tier. Paid plans give the full value, so trial it on a project where measurements matter, and use Planner 5D or Homestyler when a free plan is the priority.