What caused the sudden 50% decrease in new pro sign-ups on Thumbtack's mobile app last week?

Introduction

The sudden 50% decrease in new pro sign-ups on Thumbtack's mobile app last week is a critical issue that demands immediate attention. As we analyze this product challenge, we'll follow a systematic framework to identify, validate, and address the root cause while considering both immediate and long-term implications.

Our approach will involve a thorough examination of the problem, generation of data-driven hypotheses, and development of a comprehensive solution strategy. We'll begin by clarifying the context, then rule out external factors before diving deep into the product ecosystem, user journey, and metric breakdown. This will lead us to form and validate hypotheses, ultimately resulting in a clear action plan.

Step 1

Clarifying Questions (3 minutes)

• Looking at the timing, I'm thinking this could be related to a recent app update. Has there been any significant changes or updates to the mobile app in the past two weeks?

Why it matters: Recent changes could directly impact user behavior and sign-up rates. Expected answer: Yes, there was an update released 10 days ago. Impact on approach: If confirmed, we'd focus on changes introduced in that update.

• Considering the specificity of "pro sign-ups," I'm wondering about our onboarding flow. Have we made any changes to the pro onboarding process or requirements recently?

Why it matters: Changes in onboarding could create friction for new pros. Expected answer: No changes to the onboarding process itself. Impact on approach: If unchanged, we'd look at other factors affecting pro motivation or ability to sign up.

• Given the magnitude of the decrease, I'm curious about our marketing efforts. Have there been any significant changes in our marketing campaigns or spend for pro acquisition?

Why it matters: Changes in marketing could directly impact the number of pros attempting to sign up. Expected answer: Marketing efforts have remained consistent. Impact on approach: If consistent, we'd focus more on product or user experience issues.

• Considering potential technical issues, I'm wondering about app performance. Have we noticed any unusual crash rates or performance metrics for the app in the last week?

Why it matters: Technical issues could prevent pros from completing the sign-up process. Expected answer: No significant changes in crash rates or performance metrics. Impact on approach: If stable, we'd look more closely at user behavior and experience within the app.