See your motif repeat. Move the seams. Keep your layers.
Seamply is an iPad app that shows your Procreate drawing as a seamless repeat, sends the offset tile back as a layered PSD, and turns the pattern into finished images for posts and print.
Three gestures, one screen
See your motif repeat
Paste your canvas straight from Copy All, or open a PSD from Files. The artwork fills the screen as a continuous repeat right away. Pinch and drag across it the way you would across a printed length of fabric.
Move the seams
Switch between grid, half-drop and brick with one tap. Show the seams to see where the edges of your tile fall, hide them to judge the drawing. When a motif sits badly across a seam, move the seam rather than redrawing.
Keep your layers
Send hands the offset tile back. A layered PSD stays layered: every layer shifted by the same amount, nothing flattened, nothing merged. Nothing is ever resampled: the pixels you bring in are the pixels that come out.
From tile to finished image
When the pattern is done, the Export tab turns it into a finished image. Choose how many times the tile repeats across, tilt it if you like, and share a JPEG, a PNG, or a layered PSD when your file has layers.
A post
Square, 4:5 or 3:4, a story or a pin, at the pixel size Instagram and Pinterest expect.
A print sheet
A4, A3 or Letter, a fat quarter or a yard of fabric, at the resolution you choose. See how the pattern falls at its real size before you order.
Any size
Type a width and a height in pixels, centimeters or inches. The pattern fills it, at the angle you set.
Why your layers matter
Most repeat tutorials start by flattening: merge everything, cut the canvas in four, swap the quarters. It works, but the layers are gone. You can no longer recolor a motif, nudge one element or hide the background.
Seamply shifts the whole PSD instead. Every layer moves by the same number of pixels, so the drawing looks exactly the same, and each layer is still editable when it comes back into Procreate.
This holds because an offset is the same for every layer: moving them all together changes where the edges fall, never how the layers combine. Blend modes, opacity and layer names come back as they were.
Three repeats, one tile
The same tile, repeated three ways. Seamply shows all three on your drawing, live, and you switch with one tap.
Grid
The tile repeats side by side and top to bottom. Also called a straight or block repeat.
Half-drop
Every other column drops by half a tile. Often used for fabric and wallpaper, because it breaks up the grid.
Brick
Every other row shifts by half a tile, like bricks in a wall.
Seamply in facts
Everything Seamply does today, checked in the beta on September 25, 2026.
| Device | iPad only, iPadOS 26 or later |
|---|---|
| Bring your art in | Copy All in Procreate, or a PSD, PNG or JPEG from Files, the share sheet or drag and drop |
| Repeats | Grid, half-drop, brick |
| Largest image | 16,384 px on a side, within what the iPad’s memory allows |
| What comes back | The offset tile: a PSD with every layer shifted, or a PNG for flat artwork. Through the share sheet or the clipboard |
| Export | A finished image for a post, a print sheet or a custom size, as a JPEG, a PNG or a layered PSD |
| Pixels | The tile sent back to Procreate is never resampled, never flattened |
| Color | Display P3 end to end. A CMYK PSD comes back CMYK |
| Network | Only for the pattern of the day, the patterns you submit, and anonymous usage statistics you can turn off. No account to create, no tracking |
Sources: Seamply 1.0, TestFlight beta. Checked on .
What it does not do
No drawing tools, no motif library, no AI generator, no subscription. No account to create and no tracking. The app works offline; only the pattern of the day and submitting a pattern need a connection. Your artwork stays on the iPad unless you submit a pattern, and then only a flat image leaves, never your PSD or its layers. The one thing the app sends on its own is anonymous usage statistics, which you can turn off in Settings.
Questions
Do my Procreate layers survive?
Yes. Open a layered PSD and Send gives you back a PSD with every layer shifted by the same number of pixels. Nothing is flattened or merged, and blend modes stay as they were. Flat artwork comes back as a PNG.
How do I get my drawing from Procreate into Seamply?
The quickest way is Copy All in Procreate, then open Seamply: it picks up the copy. That copy is flat. To keep your layers, share a PSD from Procreate and open it in Seamply.
Can I make an Instagram post or a print sheet of my pattern?
Yes, in the Export tab. Pick a post, a story, a pin, a print sheet, a piece of fabric or any size, set how many repeats fit across and the angle, then share a JPEG or a PNG. If your file has layers, you can export a layered PSD too.
Does Seamply change my pixels?
No. The offset moves whole pixels: the file that comes back has exactly the same size and the same pixels, only rearranged. Seamply never scales or filters the tile it sends back. Only Export, which makes a new image at the size you choose, recalculates pixels.
How big can my canvas be?
Up to 16,384 px on a side, within what your iPad’s memory allows. If a file is too big, Seamply says so instead of crashing.
Which iPads does it run on? Do I need an account?
Any iPad with iPadOS 26 or later. There is no account to create. The app works offline and sends only anonymous usage statistics, which you can turn off in Settings; nothing is used to track you. Only the pattern of the day and submitting a pattern need a connection, and submitting uses your iCloud account. The beta is free on TestFlight.
Who makes it
Seamply is made at Swindler & Swindler, an illustration studio. Margot draws her patterns in Procreate; Rémy Boiré builds the app. Every feature has to pass one test: Margot must understand it without reading anything.
Guides
Seamless pattern checker for Procreate
Drop a tile from Procreate and see it repeat as a grid, half-drop or brick, with every seam marked. Free, no account, and your image stays on your device.
How to check a seamless pattern and fix hairline seams
White lines where your tiles meet? How to check a seamless pattern from Procreate, what causes hairline seams, and how to fix each cause before you print.
Canvas size and layer limits for seamless patterns in Procreate
How many layers Procreate gives you for each iPad and canvas size, what size to draw a pattern tile for print, and what print services ask for.
Join the beta
Seamply is in TestFlight beta, iPad only, iPadOS 26 or later. To join, or to report anything, write to contact@seamply.app.
Email to join the beta