The Best Free AI Interior Design Apps in 2026, Compared Honestly

Every tool on this list calls itself free, and every one of them means something different by it. Some give you real credits with no card, some give you a watermarked preview, some give you a full free product with the AI features behind a paywall. We compared six of the most-used AI interior design apps on the only question that matters: what do you actually get before paying, and what is the paid tier really for.

One disclosure up front: RemodelHome is our tool. We put it first because this is our site and you should weigh the bias accordingly; the facts about every other app below come from their own published pricing, checked August 2026, and we link the numbers we compared.

The comparison at a glance

1. RemodelHome: photo in, remodeled room out

Ours, so the short version: you upload a photo of your actual room, pick a style or describe the change in plain words ("white oak floors, limewash walls, keep the sofa"), and get a photorealistic version of that same room back in about a minute. New accounts get 5 free credits with no card, each generation costs one, and paid packs start at $9.99 a month. There is no watermark on any tier.

What it does not do: floor plans, measurements, or shopping lists. It is a visualization tool for the decision phase of a remodel, built around one loop: try a direction, look at it on your real room, try another. If you want CAD exports or furniture catalogs, two apps further down this list do that job properly.

2. REimagineHome: the most generous true free tier

REimagineHome gives new users 5 free designs with no credit card, at the same quality as paid, and its conversational exploration mode costs no credits at all: an honest free tier, and we say that as a competitor. Paid plans run on credits (Essential 30, Pro 200, Advanced 400, Agency 900 per month), with the Pro tier unlocking the conversational design flow and real-product matching, where the tool suggests actual buyable furniture matching the render.

It leans hardest into real estate: virtual staging is clearly the product’s center of gravity, and agents are who the Agency tier exists for. For a homeowner doing one room, the 5 free designs may be all you ever need.

3. InteriorAI: the volume play

InteriorAI, built by indie developer Pieter Levels, offers 55+ styles, sketch-to-render, virtual staging and even 3D flythrough video. The free tier is a limited signup preview; the real product starts at Pro, $49 monthly or $29 a month billed yearly, for 1,000 designs. That is a different order of magnitude from every credit-based app here, which is the tell for who it serves: professionals rendering constantly, not homeowners testing five ideas.

Two honest caveats from its own documentation: no refunds (GPU costs are sunk), and roughly one render in ten carries AI artifacts like warped furniture. That failure rate is normal for the category, but InteriorAI is unusually upfront about it, which we respect.

4. RoomGPT: the one everyone tried first

RoomGPT popularized the upload-your-room format and claims over 4 million users. Today it runs on credit packs with near-permanent discount promotions, and the free allowance has shifted repeatedly: expect to create an account before generating anything. Output is a fast themed restyle of your photo with a handful of preset themes.

It is the right tool for a quick one-off: less control than the prompt-based tools above, fewer styles, but a very short path from photo to result. If you want to steer the output ("keep my floors, change everything else"), a prompt-driven tool will frustrate you less.

5. Homestyler: a real free product, AI as a bonus

Homestyler is a different species: a cloud 3D floor planner with a genuinely usable free tier (unlimited 1K renders, a 100,000+ model library) and AI features layered on top for paid users. Pro pricing is regional (in the range of a few dollars to $10 a month, with 100 AI credits and watermark removal), scaling up to team plans.

Choose it when your question is spatial: will the sectional fit, where does the wall go, what does the whole floor look like. The AI redesign tools here are a bonus, not the core; for pure photo-to-photo restyling the credit apps above give better results faster.

6. Planner 5D: plans and budgets first

Planner 5D is the other floor-planner in the list: free tier with unlimited projects and about half the furniture catalog, Premium at $19.99 a month (or $59.99 a year, the price that actually makes sense) for the full 10,000+ item catalog, AI floor plans and photorealistic renders, and a Professional tier with CAD export for people who produce drawings for a living.

Its AI features generate floor plans from images, which is genuinely useful when you are documenting an existing home. Like Homestyler, it wins on planning and loses on restyling: the render pipeline is built for accuracy, not for the try-ten-looks-fast loop.

Which one should you actually use?

• You want to see YOUR room restyled, fast and free: RemodelHome or REimagineHome, both give 5 real free credits with no card. Try both, keep whichever output you like more.
• You are staging listings or need product matching: REimagineHome, it is built for exactly that.
• You render dozens of images a week professionally: InteriorAI Pro yearly, the per-render price is unbeatable at volume.
• Your question is layout, not looks: Homestyler free, then Planner 5D Premium if you outgrow it.
• You want one quick themed restyle with zero learning curve: RoomGPT.