Groutr: Grout Color Visualizer

Neural Appworks, LLC

Contains adsIn-app purchases

About this app

Choosing the right grout color can make or break your design. Groutr lets you see how any grout shade — or even multiple shades — will look on your own tiles and mosaics before you commit.


Take a photo of your project, and Groutr automatically detects the grout lines. From there, you can:

- Try any color: pick a custom shade or colors from real grout brands

- Compare side-by-side: preview up to 4 colors at once

- Visualize multi-color grout: paint or recolor lines individually for creative designs

- Edit with precision: erase or redraw to refine the detected grout lines

- Simulate grout on all tile types: mosaics, ceramic, hex, pebble pavers, stained glass, and more. If it needs grout, Groutr can visualize it.

Whether you’re planning a bathroom remodel, designing a kitchen backsplash, or finishing a mosaic artwork, Groutr uses your own images to help you explore options, avoid costly mistakes, and design with confidence.

Ratings and reviews

Really good app. Been mosaicing for years and always spend too much time pondering grout colour. Take pic of your mosaic, upload, set pieces and grout to smallest possible and try all the different colours to your heart's content! Also found that zooming in on your picture of mosaic piece, taking a screenshot then trying grout colours with that pic, gives great detail and works well.

Lovely and useful. Gives me an idea of different grout effects.

Good for trying out different color grout on my pieces

What’s new

This newest release has improved grout detection. Previously it struggled with very small tiles or a full room view for kitchens or bathrooms. Now it can handle these better. Wasn't working before? Try it again!