10 Best Interior Design Apps in 2026

Planner 5D remains one of the most popular home design tools for good reason. Its intuitive drag-and-drop editor makes creating 2D and 3D floor plans approachable even for beginners, and the extensive furniture catalog lets you furnish rooms with realistic items. Available across desktop, tablet, and mobile, it offers flexibility that many competitors lack. The free tier is usable but locks premium items and HD rendering behind a subscription.

Homestyler stands out for its photorealistic 3D rendering quality and integration of real-brand furniture models. As a browser-based platform, it requires no downloads and offers generous free features including floor plan creation and 3D visualization. The trade-off is a steeper learning curve — getting the most out of Homestyler takes time and patience. For users willing to invest that effort, the results rival professional design software.

RoomGPT deserves credit for popularizing AI room redesign as an open-source tool. Upload a room photo, select a style preset, and receive an AI-generated redesign. The simplicity is its greatest strength — no account needed, no complex interface, just quick results. However, output quality varies significantly between generations, style options are limited, and there is no mobile app. It works best as a quick experiment rather than a serious design tool.

Interior AI has carved out a niche among real estate professionals and homeowners who want quick AI-powered room transformations. The tool handles virtual staging well, making it practical for listing photos and marketing materials. Multiple style presets deliver reasonably consistent results. The main drawback is the lack of a free tier — you need to pay before seeing any results, which creates friction for casual users.

Havenly bridges the gap between DIY design apps and hiring a local interior designer. You are matched with a real professional designer who creates personalized room concepts, curated furniture shopping lists, and a cohesive design plan. The human touch adds genuine value — designers catch nuances that AI misses and can source specific pieces. The trade-off is cost ($99+ per room) and turnaround time (days rather than seconds).

Modsy earned a strong reputation for photorealistic 3D room renderings with purchasable furniture before discontinuing operations. The service combined room scanning, professional design, and shoppable furniture in a way that felt ahead of its time. While Modsy is no longer available, it set a standard for what online interior design services could deliver. Former users should look at alternatives like Layoutly for AI-powered style exploration or Havenly for professional design services.

Decorilla occupies the premium tier of online interior design services. Multiple designers compete for your project, creating 3D renderings and detailed design concepts. The trade discount on furniture through their retail partners can offset the design fee, making it a smart choice for high-budget renovations. The starting price of $195 per room puts it out of reach for casual exploration, but for committed renovators, the professional guidance and shopping savings add real value.

RoomSketcher is a solid browser-based floor plan tool that balances ease of use with capable 3D visualization. Its drawing tools make creating floor plans straightforward, and the live 3D walkthrough feature lets you explore designed spaces interactively. The furniture catalog covers the essentials. While it lacks AI features, it remains a reliable choice for floor plan creation — particularly for real estate listings where dimensional accuracy matters.

HomeByMe, powered by Dassault Systemes' 3D technology, offers a polished free floor plan creation experience. The 3D rendering quality benefits from Dassault's engineering heritage, and the inclusion of real brand furniture adds authenticity to designs. The free tier is generous enough for basic use, though rendering credits are limited. For a browser-based tool, it delivers surprisingly detailed results.