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

Spacely AI is the best free starting point for a photo restyle. Upload a room photo, pick a style, and get a photorealistic version back, often in about a minute. Empty rooms can be auto-furnished, and a SketchUp plugin helps designers who already model in 3D. The free plan needs no card, which makes it easy to test on your own room.

The limit is the credit system. Trial credits run out, and higher resolution downloads or extra edits use more credits, so a whole house will need a paid plan. Furniture in renders is also inspiration, not a shopping list, so you cannot assume a rendered sofa exists at a given price. For a few rooms and a clear style direction, Spacely is hard to beat for free.

REimagineHome suits homeowners and agents who want a room to look finished, not sketched. Five free designs let you test a living room or bedroom in different styles, and paid plans add virtual staging, furnishing, renovation, and exterior views. That range helps when a listing photo or a renovation pitch needs to look polished.

Five designs will not cover a whole house, and credit use varies by tool, so check how many credits a high-resolution result needs before paying. The tool is also best for visualization, not for measured plans. For a focused restyle or a staging job, REimagineHome is a strong pick after Spacely.

Interior AI is the premium photo restyle option, with a wide style catalog and output that often looks like a real photo. Designers and agents who present many rooms to clients value that consistency, and structure-keeping modes try to hold the room's shape while changing finishes and furniture.

There is no free plan, so the entry price is the test price, and at $49 per month it is a commitment, not a casual try. Even with structure modes, an AI render can move a window or bend a wall, so treat results as direction, not proof. For frequent professional use, the quality may justify it. For one room, a free tool will do.

Homestyler bridges the photo and planner worlds. The free plan covers 3D planning with unlimited 1K renders, which is enough to test layouts and share ideas with a partner or contractor. Mobile and web apps mean you can sketch on a phone and refine on a computer, and paid plans add AI tools and higher resolution.

The free renders are not print-quality, and some AI features sit behind paid tiers, so a professional presentation may need an upgrade. For a homeowner planning a room on a budget, Homestyler is one of the most useful free tools here, because it gives both a plan and a picture, not just a filtered photo.

Planner 5D is the pick when measurements matter. You can draw a room to scale, place furniture, switch between 2D and 3D, and check whether a sofa actually fits before you buy it. The free plan covers unlimited projects, which suits a long renovation where plans change often.

Premium items, AI design tools, and higher-quality renders need a paid plan, and the free catalog is only part of the full range. That limit is fair for a free planner, but it can frustrate users who want a specific piece. For fit and layout, Planner 5D beats a photo filter every time.

DecorMatters feels like a decorating game with real rooms underneath. You can preview furniture in your space with AR, try styles, and join design challenges that surface ideas you might not have considered. The free version covers basic design features, and shopping links connect some items to real brands.

Premium decor, advanced tools, and an ad-free experience need in-app purchases or a subscription, and the catalog can push you toward items that cost extra. For renters and enthusiasts who want to play with a room before committing, DecorMatters is fun and genuinely useful. For a measured renovation plan, pair it with Planner 5D or Homestyler.

IKEA Kreativ is the only fully free tool here that is not a trial in disguise. Scan a room, remove or keep furniture, and place real IKEA pieces to scale, then order what fits. For an IKEA shopper, that link between preview and purchase removes the main guesswork in furnishing a room.

The limit is obvious: it is an IKEA tool, so non-IKEA styles and brands are out of scope. If your taste runs beyond that catalog, use Kreativ for the IKEA pieces and a general AI tool for the wider style direction. For a budget furnishing job, Kreativ is the best free option, full stop.

Roomstyler suits people who enjoy building a room themselves. Draw the space, place real furniture from brands, and view it in 2D and 3D, with a community of other rooms to borrow ideas from. The free tool lasts for a long project, which matters when a renovation drags over months.

High-quality renders can need credits, and the tool lacks the depth of professional design software for complex work. For a homeowner who wants to test a layout with real pieces, Roomstyler is a patient, free companion. For a photo restyle in seconds, Spacely or REimagineHome will be faster.

Collov AI is a budget photo tool that gives a few watermarked trials before you pay. That trial is enough to judge whether its styles suit your room, and the paid plan is lower than Interior AI for regular use. Interior and exterior options cover both a living room refresh and a curb appeal idea.

Watermarked trials cannot be used for a client presentation, and credit or plan limits still apply once you subscribe. For a homeowner who wants a cheap photo restyle and does not need the polish of Interior AI, Collov is a fair middle ground. For a fully free test, start with Spacely first.