Learning and careers decision
darayuth hang
A competent developer can build and run a useful replacement in about a week using existing PDF parsers and an LLM API; the product shows no evident durable moats that prevent DIY.
Visit website↗Built by dhang, who ships 4 products in this index
$9.99/mo
$120/yr
Read off the official pricing page.
$100one-off38 h to build
$20/mo6 h/mo upkeep
On cash alone, building overtakes the subscription at 3 seats.
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 darayuth hang alternatives, with the arithmetic →
What a replacement has to do
- Upload or paste text/PDF → extract key concepts → call an LLM to generate quiz questions and answers → present interactive study UI and allow exports.
What it still won’t have
- Polished UI/UX and visual design polish of the hosted product
- Built-up trust/brand and existing user base/support channels
- Any proprietary model fine-tuning or vendor-specific optimizations the product may use
- Potentially exact export behavior, edge-case handling, and prebuilt templates
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 3 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 AI quiz generator web app using Django + Postgres for the backend, React for the frontend, and OpenAI-compatible LLM API for generation. In scope: file upload and text extraction (PDF/Docx), backend endpoints to send extracted text to the LLM and persist generated quizzes, a React study UI (multiple choice / true-false / fill-in-the-blank) with progress tracking, export endpoints for JSON, QTI and CSV, Stripe one-time pass payments, basic user auth, error handling, and unit/integration tests for parsing, LLM integration, and export generation. Out of scope: advanced UI theming, course/LMS multi-tenant features, and model fine-tuning. Provide retry/failure handling for uploads and API calls, input validation, and automated tests covering parsing, generation pipeline, and exports.
How we checked
How the score was reached
- Build verdict base78
- An open-source build was found+5
- 3 cited sources+3
- Price verified on pricing page+3
- Evidence score89
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 productQuizCreatorPro homepage
- official pricingFree Lesson Plan Templates / Pricing excerpt
- open sourceSkyCascade/SkyLearn
Integrity checks
What held up, and what did not.