Mobile App Growth: Diagnose the Sign-up Funnel and Prioritize Acquisition Levers
Company: Meta
Role: Product Manager
Category: Product Design & Strategy
Difficulty: medium
Interview Round: Other
You own growth for a mobile app, and the goal you have been given is to raise the total number of people who sign up for it. How would you grow sign-ups, and which strategies would you use to acquire more users? Explain how you would find where potential users are lost today, which acquisition and conversion levers you would prioritize, and how you would judge whether the plan worked.
```hint Split volume from conversion
Total sign-ups depend both on how many people reach the app and on how many of them finish creating an account. Trace the path from first hearing about the app to a completed account, find the step that loses the most people, and let that decide where the first investment goes.
```
### Clarifying Questions
- What does the app do, and how far along is it: pre-launch, early traction, or already large? An app that gets better with friends can lean on invites, while a utility app depends more on search and app-store discovery.
- Does success mean completed registrations, or new accounts that go on to use the app during their first week?
- Is there a budget for paid install campaigns, or should growth come from organic, referral and in-product channels?
- Should growth come from the current markets and platforms, or can the plan open new countries, languages or a web entry point?
### What a Strong Answer Covers
- A precise goal that defines a sign-up and protects user quality, so the plan does not buy accounts that never come back
- A funnel from first exposure through the app-store page, install, first open and completed registration, with data used to locate the largest drop-off by platform, channel and country
- Acquisition levers (referral and invite loops, shareable content, app-store optimization, web-to-app paths, paid campaigns, partnerships) judged by cost, scale and fit for this app
- Fixes inside the registration flow itself, and a prioritization of all levers by impact, confidence and effort
- Metrics and guardrails: funnel conversion, cost per activated user, new-user retention and fake-account rate, with experiments that prove impact
### Follow-up Questions
- Sign-ups rose sharply after you dropped email verification, but first-week retention of new users fell. Do you keep the change?
- How would the plan change if the app were a marketplace that needs both buyers and sellers to sign up?
- With a fixed marketing budget, how would you decide how much to move from paid install ads into a referral reward?
Overview: A product growth interview question about raising the number of people who sign up for a mobile app. It tests whether a candidate can map the path from first exposure to a completed registration, find the biggest drop-off, prioritize acquisition and conversion levers, and pick metrics that guard against low-quality sign-ups.