When measuring the success of niche-specific influencer marketing campaigns, several KPIs (key performance indicators) or metrics can be utilized.

1. Audience Engagement: This metric indicates how actively audiences are interacting with the influencer’s content that promotes your products or services. Engagement can be measured by the likes, comments, shares, views, or saves on posts.

2. Conversion Rates: This is the ultimate measure of success in any marketing campaign. Conversion can be measured via purchases, sign-ups, or any action that leads the audience further along the customer journey.

3. Audience Growth: This measures the increase in follower count over the duration of the campaign. A larger audience means increased reach and visibility.

4. Brand Mentions: This metric tracks how many times the brand has been mentioned by the influencer and their audience over the duration of campaign.

5. Return on Investment (ROI): Measuring ROI involves calculating the cost of the campaign (including influencer fees) against the revenue generated from the campaign.

Different influencer marketing platforms like Flinque, offer these metrics in their analytics dashboard. Platforms like Flinque, allow brands to not only discover and connect with niche influencers, but also monitor campaign performance in real-time, facilitating more effective campaign adjustments and decision-making.

Remember, the choice of influencer marketing platform largely depends on a brand’s or team’s specific needs or preferences. Comparing different platforms will allow for an informed selection that best aligns with your marketing objectives and budget allocation.