Gridium – home
Download on the App Store
SooniPhone Duo in version 1.4.1

Your photos.
Your masterpiece.

Gridium turns your photos into a collage in seconds – with 43 templates or freestyle on the new blank canvas. For iPhone, iPhone Duo and iPad.

  • Free
  • No subscription, no ads
  • Everything stays on your device
Gridium on iPad: template overview
Gridium on iPhone: blank canvas with photos in a circle, heart and Polaroid

New in 1.4

Design freely.
No grid required.

The blank canvas is an empty square or 9:16 story canvas. Add a photo as the background, put photos into shapes like a circle, heart or Polaroid, and place text and stickers wherever you like.

Blank canvas with a selected Polaroid and its handles
Place anythingMove, scale and rotate – with handles and snapping.
Photo editor with shapes and filters
Photo editorCrop, 9 filters, brightness, contrast, frames.
Add shape: square, circle, heart, star and arrangements
Shapes & arrangements12 shapes and ready-made sets like the Polaroid stack.

12 shape placeholders

Square, circle, heart, star, arch, hexagon, diamond and more – insert, add a photo, done.

Ready-made arrangements

Polaroid stack, circle trio, film strip, focus and heart duo – in a single tap.

9 filters

Original, vivid, warm, cool, B&W, noir, sepia, faded and dramatic – with live thumbnails.

Fine-tuning

Brightness, contrast, saturation and opacity, all continuous. Preview and export look the same.

Frames & Polaroid

Frames in any color – even, following the shape, or Polaroid-style with a wide bottom edge.

Photo background

Your own photo fills the canvas and blurs smoothly – behind any template, too.

Coming in version 1.4.1

Made for iPhone Duo.

Closed, open or half-folded: Gridium follows the fold – nothing important disappears into the crease.

iPhone Duo open: collage left of the fold, tools to the right

Open like a book: your collage sits left of the fold, the tools to the right. Templates, gallery and settings split exactly in the middle.

Split at the fold

The template overview uses an even number of columns, and cards and columns end right at the fold – no photo and no text sits in the crease.

Nothing jumps

Gridium already splits at the fold when the device lies flat. When you fold it, everything stays where it is.

Bars at the side

Just as Apple intends: navigation and tools sit along the edge, with Back or Close always at the top.

43 templates

A layout for every shot.

From the classic 2 × 2 to bento, magazine and photo dump, plus ten 9:16 story layouts. Smart Grid picks the right template for the number of photos you choose.

  • 2 × 2 Grid

    4 photos

  • 3 × 3 Grid

    9 photos

  • 2 × 3 Grid

    6 photos

  • 4 × 4 Grid

    16 photos

  • Vertical Strips

    3 photos

  • Horizontal Strips

    3 photos

  • Feature Left

    4 photos

  • Feature Top

    3 photos

  • One over Two

    3 photos

  • Two over One

    3 photos

  • Mosaic

    5 photos

  • Single Photo

    1 photo

  • Side by Side

    2 photos

  • Stacked

    2 photos

  • 3 × 2 Grid

    6 photos

  • 4 × 2 Grid

    8 photos

  • 3 × 4 Grid

    12 photos

  • Feature Right

    4 photos

  • Feature Bottom

    3 photos

  • Big Top + Three

    4 photos

  • Two Left, One Right

    3 photos

  • Half + Grid

    5 photos

  • Bento 6

    6 photos

  • Magazine

    6 photos

  • Before / After

    2 photos

  • Before / After + Details

    4 photos

  • Photo Dump

    7 photos

  • Bento 7

    7 photos

  • Outfit of the Day

    7 photos

  • Recipe

    7 photos

  • Moodboard

    6 photos

  • Travel Panorama

    5 photos

  • Triptych

    5 photos

  • Cinema

    7 photos

  • Story Duo

    2 photos

  • Story Duo 50/50

    2 photos

  • Story Grid 2 × 3

    6 photos

  • Story Feature Top

    3 photos

  • Story Feature Bottom

    3 photos

  • Story Mosaic

    5 photos

  • Story Grid 2 × 4

    8 photos

  • Story Photo Booth

    4 photos

  • Story Sandwich

    5 photos

Features

Everything a collage needs.

Smart-Grid

Just pick your photos – Gridium finds the right template for how many you chose. With its own story variant, or roll the dice for a surprise.

Text & stickers

8 fonts, any color and an optional colored background – with an eyedropper right from your collage. Plus emoji and symbol stickers; rotation snaps at 0°, 90°, 180° and 270°.

32 Formats

Square, portrait, landscape, story and panorama, sizes for Instagram, Facebook and TikTok – plus A3 to A6 for printing.

4 Export formats

JPEG, PNG, HEIF or PDF – in high resolution to your photo library, to the Files app or straight to any app.

8 Color themes

The app in your look – with true black in Dark Mode for OLED displays.

Tile by tile

Zoom, move, replace or reset every photo. Swap tiles with drag and drop.

Pick up where you left off

Collages in progress are saved automatically – continue, rename, pin or duplicate them. Share them as .gridium files via AirDrop or iCloud Drive.

Your look

Transparent, white, black, gradient, any color or a photo as the background. Spacing, corners, outer margin and frames are all continuous.

In 8 languages

English, German, French, Italian, Spanish, Portuguese, Polish and Dutch.

DEENFRITESPTPLNL

Screenshots

A quick tour of the app.

Welcome
Templates
Blank canvas
Photo editor
Shapes
Projects
Gallery
Settings

Privacy

Your photos stay yours.

Gridium processes everything on your device. We never see your photos.

No account

Open it and start – no sign-up, no email address.

No upload

Photos and projects stay on your device. Gridium only gets the photos you pick.

No tracking

No analytics SDKs in the app, and no cookies on this website.

No ads

No subscription and no ads – just your collages.

All the details are in the privacy policy.

Gridium app icon

Ready for your
first masterpiece?

Gridium is free – for iPhone and iPhone Duo with iOS 26 and iPad with iPadOS 26 or later.

Download on the App Store

No subscription · No ads · No account