dara.
Case study · Our own product, built from zeroGoEureka
A study app we built from scratch, for the web, Windows and Mac.
Turns a student's own slides and notes into quizzes, and explains every mistake with the slide it came from.
Question 4 of 20Where is the heart's natural pacemaker?
Sinoatrial node
80%16 of 20 rightUp 15 points
⚑ Flagged for later
14screens designed first
884automated tests
3platforms, one codebase
0servers to rent
21ready-made quizzes
How we built it
The same four steps we use for client work.
01
Designed
Every screen prototyped and clicked through before any code.
02
Coded
React and TypeScript, from scratch. One codebase for web and desktop.
03
Tested
884 automated tests. Every build clicked through before release.
04
Shipped
Live on the web, Windows and Mac.
Choices we made, and why
Every choice has a reason.
No server, no database
Everything lives in the student's own Google Drive. Nothing to leak, nothing to rent.
The AI shows its sources
Code checks every answer against the student's own files.
No AI bill needed
Pick Gemini, OpenAI or Claude, or run a free model on the laptop.
Readable for everyone
Big text, a dyslexia font, high contrast, thumb-sized buttons.
Inside the app
Three screens students use every day.
Built withReactTypeScriptElectronGoogle Drive APIGemini, OpenAI, ClaudeOllama
Your project, same process
Design first, tested before launch, no servers you don't need.