Design a Consumer App That Helps People Build and Follow a Personal Investing Plan
Company: Meta
Role: Product Manager
Category: Product Design & Strategy
Difficulty: medium
Interview Round: Other
Design an app that helps people choose an investment strategy and put it into practice. Explain who the app is for, which of their problems it solves, what would go into the first version, and how you would measure whether it is succeeding.
```hint Pick the investor first
An investing app can serve very different people, from someone who has never bought a fund to someone who trades every day. Choose one group deliberately, then ask why people in it fail to follow a sound strategy today.
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### Clarifying Questions
- Is this a new standalone product or part of an existing financial product, and will it hold assets and execute trades or only help users plan and track?
- Does "investment strategy" mean a long-term plan (what to invest in, how much and how often), or tools for designing and testing active trading strategies?
- Which country are we launching in, given that personalized investment recommendations are regulated differently from market to market?
- Is there a business model in mind, such as a subscription, a fee on assets, or a free tool that supports another product?
### What a Strong Answer Covers
- A product goal and a reasoned choice among investor segments, such as first-time investors, busy savers with specific goals, and active traders.
- Concrete pain points of the chosen segment, from not knowing where to start to abandoning the plan when markets fall.
- Solutions mapped to those pain points, prioritized into a focused first version.
- A north-star metric that rewards sticking to a sound plan rather than trading volume or daily opens, with guardrails.
- Regulatory, trust, security and behavioral risks, and how the design addresses them.
### Follow-up Questions
- The first sharp market fall after launch arrives and many new users want to sell everything. What does the app do, and what does it deliberately avoid doing?
- Leadership asks you to add trading streaks and leaderboards to lift daily engagement. How do you respond?
- How would you extend the product to experienced investors without making it harder for beginners?
Overview: A product design question asking for an app that helps people choose an investment strategy and stick to it. It tests segment selection, understanding why new investors stall or abandon plans, prioritizing a first version, picking a north-star metric that does not reward overtrading, and handling regulatory and trust risks.