Metrics question
Define success metrics for Android OS.
- Metrics
- Hard
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What this question tests
Metric-tree thinking for a platform, balancing users, developers, and OEM partners.
How to approach it
- Clarify the audience: end users, app developers, or OEM partners, since a mobile OS serves all three.
- Propose user-side metrics: device activations, daily active devices, and OS update adoption rate.
- Propose developer-side metrics: active apps in the store, and developer revenue.
- Propose OEM-side metrics: number of partners shipping the OS, and device diversity.
- Pick a top-level north star, e.g. daily active devices.
- Add update adoption rate as a guardrail, since fragmentation hurts the whole ecosystem.
What a strong answer includes
- Explicitly covers the three-sided platform, users, developers, and OEMs, instead of only user-facing metrics.
- Names OS update or security-patch adoption rate as a critical guardrail specific to a mobile OS.
- Picks daily active devices as the north star, distinguishing it from device activations, a one-time event.
- Notes fragmentation risk, many OS versions in the wild, as a metric worth tracking for ecosystem health.
Common mistakes
- Treating a mobile OS like a single app and giving only generic engagement metrics.
- Ignoring the developer and OEM sides of the platform entirely.
Likely follow-up questions
- How would you measure ecosystem health beyond just user metrics?
- What would you do if OS update adoption is lagging badly?
More metrics questions
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- Utilization went down by 45% on app XYZ in Italy for the month of August. Give a reason why and draft a plan to fix it.Spotify · Metrics · Medium
- You launched a new signup flow to encourage new users to add more profile information. A/B test results indicate that the % of people that added more information increased by 8%. However, 7 day retention decreased by 2%. What do you do?Google · Metrics · Hard
- Define the metrics for YouTube search.Google · Metrics · Medium
- You walk in to your office and find that Google cloud subscription has gone down by 20%. What do you do as a product manager?Google · Metrics · Medium
- What would be the top six metrics for WhatsApp? Now pick one from the six. Tell me three things you would do to improve that metric.Google · Metrics · Medium
More questions from Google
Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 9: Prove it paid off: outcomes, economics, and pricing
- Chapter 2: Data fluency: SQL, logs, and reading the truth yourself
- Chapter 14: Get the job: the AI PM interview loop