Purrfect Practice

Deployed a personalized optometry-law study app with 114 practice questions, saved progress, and 20 collectible cat stickers.

Open Purrfect Practice

Practice questions114

Collectible stickers20

Created forCalifornia Laws and Regulations Examination (CLRE)

My role

I developed the concept, designed the study experience, built it with Codex, and iterated on the questions, navigation, rewards, and visual identity.

The problem

My wife was preparing for the California Laws and Regulations Examination (CLRE), part of becoming licensed to practice optometry in California. She was used to studying difficult subjects, but the dense legal material and cases made it hard to stay motivated. I wanted to turn her 70+ page review guide into active practice, with explanations and rewards to keep her going.

What I built

I built a study website with 114 practice questions, organized by topic into 20-question rounds. Each question includes an explanation, a source reference, and a memorable way to understand the concept.

To make studying more rewarding, I added 20 collectible cat stickers. Every 10 correct answers unlocks a new sticker in the sticker drawer.

Progress and the sticker collection are saved so she can pick up where she left off.

Key decisions

Keep source references with the questions so the learner can check the underlying material.
Use manageable rounds and saved progress to support returning to a study session.
Reward every 10 correct answers with a collectible sticker.

Results & what’s next

Results

Deployed a personalized study app with 114 practice questions and 20 collectible stickers.
Built topic selection, explanations, retries, saved progress, and animated rewards.
Five optometry students used it to study for the California Laws and Regulations Examination (CLRE).

What I learned

Reward timing and navigation shaped how inviting the app felt. I refined the sticker unlocks, drawer, and visual identity alongside the study functionality to sharpen my user experience design skills.

What I’d test next

I would observe real study sessions to identify confusing questions, create more scenario-based questions like those on the exam, improve explanations, and check whether the rewards support the learner’s focus.

END OF LINER NOTES ↟

Try Purrfect PracticeA little practice. A lot of cats.

Actual Purrfect Practice homepage with topic selection and a start-round button. — Choose a topic and start a round.

Actual multiple-choice practice question with answer options and progress toward a cat sticker. — Practice questions and progress.

Actual answer feedback with an explanation and reference to the highlighted study guide. — Explanations and source references.

Collectible sticker drawer showing two unlocked cat stickers, Buffering and Emotional Support Banana, alongside mystery cats and their unlock milestones. — The collectible sticker drawer.

Actual disco mode with a colorful diamond background and dancing cats around the study page. — Optional disco mode, dancing cats included.