Design the question before the app
A prototype lets you test an idea before committing to a complete application.
In 30 seconds
- Name the user and the problem.
- Sketch the smallest useful sequence of screens.
- Test whether someone can complete the intended task.
Make it concrete
Prototype a study-card app with paper or linked slides: choose a topic, answer a question, see feedback. Code can come after the flow makes sense.
- 01Need
- 02Prototype
- 03Try
Check your understanding
Must a prototype contain production code to be useful?
- Name the user and the problem.
- Sketch the smallest useful sequence of screens.
- Test whether someone can complete the intended task.
Go to the source
Sources reviewed: 13.09.2026