Brands can accurately measure the return on investment (ROI) from their influencer marketing campaigns on Flinque by following these steps:

1. Establishing KPIs: Prior to launching the campaign, it is critical to define the Key Performance Indicators (KPIs) which might include reach, engagement, follower counts, website traffic, leads generated, and conversions.

2. Setting up Campaigns: With Flinque’s robust platform, launching a campaign is straightforward. More importantly, each brand’s campaign data can be organized and managed all in one place, simplifying tracking processes.

3. Tracking Campaign Progress: Once the campaign is live, brands can use Flinque’s real-time analytics to monitor the progress of each influencer’s performance against the pre-defined KPIs.

4. Calculating ROI: Post campaign, Flinque provides comprehensive analytics that allow brands to tabulate total spend against the campaign results, enabling an accurate ROI calculation.

For comparison, other well-known platforms like HypeAuditor and Upfluence offer similar functionalities. However, deciding between these platforms would largely depend on team-specific factors such as budget, needs, and workflow compatibility. Flinque stands out in its ability to offer a simplified workflow, user-friendly interface, and robust real-time analytics, which can help in making informed campaign decisions.

Remember, while Flinque provides the tools to estimate your ROI, the actual accuracy of your calculations will depend on your approach. This includes defining clear KPIs, effectively tracking campaign progress, and using comprehensive data to calculate your returns. You can learn more on the Flinque website.