What metrics would you use to evaluate Grammarly's Premium subscription service?

Introduction

Evaluating Grammarly's Premium subscription service requires a comprehensive approach to product success metrics. To address this challenge effectively, I'll follow a structured framework that covers core metrics, supporting indicators, and risk factors while considering all key stakeholders. This approach will allow us to gain a holistic view of the product's performance and identify areas for improvement.

Step 1

Product Context

Grammarly Premium is a subscription-based writing assistant that offers advanced grammar, spelling, and style suggestions beyond the free version. Key stakeholders include:

1. Users: Primarily writers, students, and professionals seeking to improve their writing.
2. Grammarly: The company aims to increase revenue and user engagement.
3. Content partners: Platforms where Grammarly integrates (e.g., Microsoft Office, Google Docs).

User flow:

1. Sign up for Grammarly Premium
2. Install browser extension or use web app
3. Write or paste text for analysis
4. Review and apply suggested corrections
5. Track writing performance over time

Grammarly Premium fits into the company's strategy of monetizing its AI-powered writing assistance technology while providing additional value to users who require more advanced features. Competitors like ProWritingAid and Hemingway Editor offer similar services, but Grammarly's brand recognition and wide integration give it an edge.

Product Lifecycle Stage: Grammarly Premium is in the growth stage, with ongoing feature development and market expansion efforts.