Mosaic Collage Maker
Auto Layout for Photo books
Only for Mac
Free · In‑App Purchases
Mac
Turn a Day One journal or a folder of photos into a print-ready book. Free to try — private, on your Mac
Turn a folder of photos — or a whole journal — into finished, print-ready photo book pages in minutes, not hours. Point Mosaic Collage Maker at a folder of ten photos or ten thousand and it lays out complete pages with no fixed grid and nothing to place by hand.
FREE TO TRY, ONE PAYMENT TO UNLOCK
Download it free and use everything: build books, edit every page, save your projects. Exports carry a preview watermark and are low resolution until you unlock the full app with one purchase. No subscription, no account. Customers who bought Mosaic Collage Maker before it became free are unlocked automatically.
TURN YOUR DAY ONE JOURNAL INTO A BOOK
Export your journal from Day One and open the .zip straight in — even very large exports with thousands of photos. Your entries, writing and photos come across in order, and you choose how to present them:
• Journal: one designed page per entry with your heading, date, place and writing, photos fitted to the page
• Photobook: your photos poured across pages in fresh mosaic layouts
Choose the book name, sub-title and colour, how notes sit with their photos, and a design. Add your own touches on every page afterwards.
DESIGNS FOR EVERY BOOK
Classic and Editorial are included. Add more looks as style packs and apply them to journals and photobooks alike: page colour, title type, colour bands, framed photos, and a footer with page numbers. Change the colour of the footer line, headings and back cover to suit the book.
NO FIXED GRIDS
Most collage apps make you build one page at a time from rigid grids. Mosaic pours a whole folder across a full set of pages in a fresh layout — a fast starting point, never a locked-in answer. Reshuffle any page, or let it flow around frames you've pinned.
YOUR PHOTOS, SHOWN PROPERLY
Fill the frame with smart subject-aware cropping that keeps faces in view, set a maximum crop, fit whole photos with no cropping at all, or use Jigsaw to pack whole photos edge to edge with no gaps. Photos are matched to the frame shape that suits them best.
MAKE IT YOURS
Every page stays fully editable. Move, resize, rotate or swap any photo. Tilt photos into polaroids, add captions and text boxes in handwriting scripts or any font. Pin a title or logo across every page. Any background colour or your own image, rounded corners if you like. Zoom right in for precise work — exports are never affected.
CHAT BOOKS
Turn a WhatsApp or iMessage conversation into a printed keepsake: chat bubbles, dates, a photo for each person, a cover and a stats page, with long chats split into one volume per year. Prefer something formal? Lay the same chat out as a clean, numbered transcript.
READY-MADE TEMPLATE PACKS
Start from a designed pack — film contact sheets, polaroid scatters, travel-journal photobooks — and pour your photos in. Save your own layouts as reusable templates.
DESIGNED FOR PRINT
• A3, A4, A5, US Letter, square and fully custom sizes — save your own as named presets
• Independent margin, gap and border controls, with a low-resolution warning
• Export high-resolution JPEGs, or a single print-ready PDF with optional 3 mm bleed
• Transparent-background PNG and PDF export
• Resize pages to a new shape without starting over
BUILT FOR REAL LIBRARIES
Thousands of photos and hundreds of pages in one project, with large books exporting reliably. Family albums, year-in-photos books, whole-journal keepsakes.
SAFE SAVING
Save your session, or bundle the whole project, photos included, into one portable Archive file. If a restored project is missing photos, you're told exactly which ones.
PRIVATE BY DESIGN
Your photos, journals and chats are processed on your Mac and never uploaded. No account, no tracking, no ads. (The only time the app talks to Apple is to check or complete your unlock purchase.)
Whether you're preserving a lifetime of photos, turning a journal into a book or printing a favourite chat, Mosaic turns memories into pages you'd want to print.
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Day One journals
• Open a Day One export (.zip) straight into the app — including very large journals with thousands of photos
• Build a Journal (one designed page per entry) or a Photobook
• Choose the book name, sub-title and colour; choose how notes sit with their photos (with the photo above, below, or as written)
• Pages fill neatly: single photos expand to the page, captions stay clear of the footer, and a "move to page above/below" button puts any note where it belongs
• Attachments the book can't use (videos, audio, PDFs) are listed before you build
Style packs for photobooks
• Journal designs now work on photobooks too: page colour, title type, colour bands, framed photos and a footer with page numbers
Free to download
• Mosaic Collage Maker is now free to download. Exports are watermarked and low resolution until you unlock the full app with a one-off purchase
• Existing customers: nothing changes — you are fully unlocked automatically.
The developer, Steven Muir, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Steven Muir
- Size
- 3.7 MB
- Category
- Photo & Video
- Compatibility
Requires macOS 13.0 or later.
- Mac
Requires macOS 13.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Unlock Full Quality $9.99
- Copyright
- © 2026 Steven Muir
