Case study 05
Cloud Prep
Cloud Prep is a practice app for four AWS certification exams: Cloud Practitioner, AI Practitioner, Developer Associate and Solutions Architect Associate. Questions are organized by certification and AWS service, every answer comes with an explanation, and accuracy is tracked per topic so you can see where you're weak.
- Own product
- EdTech, SaaS
- AWS Certification, Exam Preparation, Progress Tracking
- Next.js
- TypeScript
- Supabase
- TanStack Query
- Tailwind CSS
- Paddle
What Cloud Prep does
- Practice questions for Cloud Practitioner, AI Practitioner, Developer Associate and Solutions Architect Associate
- Questions organized by certification and AWS service
- An explanation on every answer
- Per-topic accuracy and weak-area tracking
- In-app cheat sheets
- Bookmarks and review loops
The problem
Studying for AWS exams, I wanted to know where I was weak, not just my overall score. Most question banks don't explain wrong answers or track accuracy per service.
Approach
Every question is tagged by certification and AWS service, and every attempt is recorded. Accuracy rolls up per topic, so review is steered toward weak areas, with an explanation and a cheat sheet one tap away.
Key decisions
- D1
Tag everything
Certification and service tags make per-topic accuracy a simple aggregate.
- D2
Review loops
Missed and bookmarked questions come back until they stick.
- D3
Small, fast stack
Next.js with Supabase and TanStack Query keeps the app responsive with very little server code.