Favorite-product prompt: defend the meal ordering app you rely on and improve it
Company: Coinbase
Role: Product Manager
Category: Product Design & Strategy
Difficulty: medium
Interview Round: Other
Which app for ordering food do you like best? Make the case for it: who it serves, what it does better than the alternatives, and where it still falls short.
```hint Start from a real moment
Anchor the answer in a specific situation where you actually use the app, such as a weeknight dinner or ordering for a group. Strengths and gaps are easiest to defend when you tie them to what you needed in that moment and what the other apps did worse.
```
### Clarifying Questions
- Should I pick a delivery marketplace that lists many restaurants, or can it be a single restaurant chain's own ordering app?
- Should I judge it only as a diner, or also from the side of the restaurants and couriers on the same platform?
- After explaining why it is my favorite, do you want me to propose an improvement and how I would measure it?
### What a Strong Answer Covers
- A pick grounded in a real, specific use case and a clear user segment, rather than a tour of features.
- The particular design choices that make it better than close rivals, each tied to a user need.
- An understanding of how the app makes money, and how serving diners, restaurants and couriers at once shapes the experience.
- An honest weakness and one prioritized improvement with a success metric and a guardrail.
### Follow-up Questions
- If you became the PM for this app tomorrow, which single metric would you watch most closely, and why?
- A rival copies the feature you praised most. What would still keep you on your favorite app?
- How well does the experience you described hold up in a small town where the app has few restaurants and couriers?
Overview: A favorite-product prompt that asks a PM candidate to choose the food ordering app they like best and defend the choice. It tests grounding the pick in a real use case, explaining what the app does better than rivals, understanding its marketplace and business model, and proposing one improvement with a metric.