Design and diagrams decision
GalleryWall
A capable technical user can build and maintain a one-user replacement in about a week; no durable moats shown prevent reimplementation.
Visit website↗Not priced
No pricing page we fetched carried a figure, so there is nothing to compare against. The build side is still real.
$100one-off48 h to build
$0/mo3 h/mo upkeep
No published price to break even against.
Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need - the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship. All GalleryWall alternatives, with the arithmetic →
What a replacement has to do
- Define wall dimensions, add and size frames/photos, auto-generate balanced layouts and hook coordinates, and export printable hang-maps.
What it still won’t have
- Polished cross-platform mobile app store builds and branding polish
- 100+ curated gallery-layout templates and inspiration gallery
- Paid support and QA of an established commercial product
- Any proprietary algorithms or small optimizations not documented on the site
What remains hard
- Execution quality
The only Gallery Wall App
- Execution quality
Our unique algorithm calculates the precise coordinates for every hook, ensuring your art hangs perfectly the first time.
First-year cost
No published price
GalleryWall does not publish a price we could read, so there is nothing to compare against. What building costs is below.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a single-page web app (React + Vite) that runs client-side and requires no server: implement a scaled wall canvas, image upload (client-only, persisted to localStorage), drag-and-drop frame placement and resizing, an algorithm to auto-generate balanced multi-frame layouts with configurable gaps, compute exact hook/nail coordinates from frame dimensions and a hook-offset input, and export a printable PDF/PNG hang-map with measurement markers. Out of scope: user accounts, cloud sync, mobile app stores, curated template library. Include error handling for invalid dimensions/uploads, automated unit tests for layout and hook calculations, and end-to-end tests for the core flow.
How we checked
How the score was reached
- Build verdict base78
- An open-source build was found+5
- 3 cited sources+3
- Evidence score86
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time - so the same evidence always produces the same number.
How scoring works →Cited sources · 3
Every page the run actually retrieved.
- official productGalleryWall - Gallery Wall Planner & Layout Generator App
- open sourceauthor-more/penpot-desktop
- open sourcely525/luban-h5
Integrity checks
What held up, and what did not.



