ReRoom is a good general-purpose tool that lets you explore more than 20 different design styles and get photorealistic renderings in a matter of seconds. You can upload a photo of your room and select from a range of styles to see what you like. It works on a variety of rooms, including living rooms, kitchens, bedrooms and outdoor spaces. With three pricing levels, including a free version, ReRoom is easy to use and affordable, making it a good option to get your creative juices flowing and find some inspiration for your interior design.
Another option worth checking out is Room AI, which offers 40+ design styles and tools like Restyle and Generate to create pro designs without any downloads or installations. It's geared for homeowners, interior designers and architects, with a range of options including multiple color palettes and materials. Room AI offers three pricing levels, so you can pick what's best for you.