Mosaic: Photo Collage & Layout

Mosaic is a photo collage editor for people who want their photos, side by side, and nothing else.

Pick 2 to 4 photos. Mosaic arranges them instantly, framing faces and subjects automatically, entirely on your device. Drag any seam to resize. Drag the corner handle diagonally. Pinch to reframe, tap to swap. When it looks right, save.

WHAT MAKES IT DIFFERENT

- Auto-framing that actually works: on-device intelligence centers faces and subjects in every cell the moment your photos land, so the starting point already looks good.
- Ready to share the second it is saved: the collage lands at the top of your library, where Photos and Messages offer it first. The earliest source photo's date and location are written into the file's own EXIF, so the provenance travels with the image wherever you send it. Most collage apps strip that metadata; Mosaic keeps it.
- Full resolution, always: exports use your photos' real pixels. No downscaling, no compression tricks.
- Nothing to learn: no templates to browse, no tutorial to skip. The layout is the interface.

WHAT IT LEAVES OUT, ON PURPOSE

No stickers. No filters. No text tools. No ads. No account. No tracking. Nothing ever leaves your device.

THE DETAILS

- Layouts for 2, 3, or 4 photos with draggable seams and a diagonal corner handle
- Square, portrait, story, and landscape canvas ratios, plus your photo's own ratio
- Border thickness, corner rounding, and color, including colors sampled from your photos
- Rotate, flip, replace, and swap photos in place
- Pinch the photo grid to size the thumbnails, the way Photos does

Mosaic is free with a small watermark on saved collages. One inexpensive one-time purchase removes it forever. No subscription.