Design and diagrams decision
Roomy AI
A single capable developer can build a useful web replacement (photo upload → style-driven image generation → save/export) in about a week; the shipped iOS polish, App-Store integrations, and any proprietary model access are what you'd give up.
View on the App Store↗$3.33/mo
$40/yr
Read off the official pricing page.
$100one-off32 h to build
$20/mo3 h/mo upkeep
On cash alone, building overtakes the subscription at 9 seats.
No open-source build does this yet
Nothing published replaces this one, so a replacement starts from an empty file. Here is what it would have to cover.
What a replacement has to do
- Upload a photo of a room → pick a design style → send photo + style to an image-generation/inpainting API → receive redesigned image(s) → allow simple swaps (furniture, colors) and save/export.
What it still won’t have
- Polished native iOS App Store distribution and App-Store-specific features (Face ID purchases, localized paywall behaviors)
- Apple-managed subscription flows and fraud/chargeback handling
- Any proprietary or vendor-trained models the app may use
- Polished UX, localization, and performance optimizations of the shipped product
What remains hard
- Product polish and ongoing maintenance
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 9 seats.
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 minimal web version of an AI interior-design app using Next.js + React (TS), Tailwind CSS, Node/Express API server, PostgreSQL for saved galleries, and Replicate or Stability API for image-generation/inpainting. Core features in scope: photo upload and preprocessing, style catalog UI (loadable JSON of 100+ styles), API integration to generate styled/inpainted images from a masked room photo, a basic furniture-replacement tool (select region, call inpainting with replacement asset), user gallery with authentication (email sign-in), and export/download. Out of scope: iOS App Store packaging and Apple IAP flow, advanced AR/3D visualization, large-scale multi-tenant billing. Include error handling, retries for external API calls, basic unit/integration tests for the API endpoints, and deployment scripts for Vercel (frontend) and a small managed Postgres DB. Log and limit user image-generation rate to avoid runaway costs.
How we checked
How the score was reached
- Build verdict base78
- Price verified on pricing page+3
- Evidence score81
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 · 1
Every page the run actually retrieved.
- official pricingInterior Design: Roomy AI - App Store
Integrity checks
What held up, and what did not.