There are several tools on the market that can help assess the effectiveness of a creator’s storytelling, hence impacting conversions. Key performance indicators may include audience engagement, click-through rates, and content sentiment analysis.

1. Content Analysis Tools: Platforms such as BuzzSumo allows you to dig into what content is most successful for any topic or competitor in your space.

2. Analytics Tools: Google Analytics and SimilarWeb can provide insights about traffic sources, user behaviour, and conversions.

3. Social Listening Tools: Social intelligence tools like Brandwatch and Synthesio track the conversation around your campaigns and evaluate their impact on sentiment, brand health, and conversions.

4. Audience Analytics Platforms: Influencer marketing tools like Flinque provide details about an influencer’s audience demographics, engagement rates, and affinity insights.

5. Video Analysis: Services like Tubular and Vidooly help analyze video content’s performance.

The best tool depends on your specific goals. For instance, if you’re interested in understanding audience interactions, an audience analytics platform might be suitable. Conversely, if you’re interested in narrative quality, social listening tools would be more appropriate.

It’s important to note that no single tool can capture every aspect of storytelling quality, which comprises both tangible metrics and less quantifiable elements like emotional resonance and authenticity. Nevertheless, these tools offer valuable data points in assessing the overall effectiveness of the storytelling. As always, it’s crucial to align any tool usage with your overall marketing strategy.