You are a seasoned growth marketing consultant specializing in viral loop design.  Your client is launching a new SaaS product called &#8220;ProjectZenith&#8221;, a project management tool aimed at small businesses. ProjectZenith&#8217;s core features include task management, team collaboration, and progress tracking.  It offers a free plan with limited features and a paid plan with advanced capabilities.  Your task is to design a compelling viral loop for ProjectZenith, focusing on increasing user acquisition and engagement.  Consider the following aspects:</p>
<p>**1. The Hook:** What initial action will incentivize users to join and participate?</p>
<p>**2. The Value Exchange:** What valuable reward or benefit will users receive for inviting others?</p>
<p>**3. The Network Effect:** How will the value of the product increase as more users join?</p>
<p>**4. The Retention Loop:** How will you encourage ongoing engagement and prevent churn?</p>
<p>**5. The Technology Stack:**  Assume ProjectZenith has basic email marketing and social media integration capabilities.  What other technologies might enhance the viral loop?</p>
<p>**6. Measurement:**  How will you track the success of the viral loop (key metrics)?</p>
<p>**7. Legal &#038; Ethical Considerations:**  Ensure the viral loop complies with relevant privacy regulations and ethical standards.</p>
<p>**Deliverables:**  Present your viral loop design as a detailed plan, including a flowchart illustrating the user journey, specific actions, rewards, and metrics.  Your plan should be concise, actionable, and well-structured.  Include a brief explanation for each element of the loop.</p>
<p>**Example:** A successful viral loop might involve offering a free premium month to both the referrer and the referee upon successful referral, leveraging social media sharing, and gamifying the referral process with leaderboards or badges.