Why visitors are not being tracked properly?

Several factors affect the way your website visitors are tracked by Nelio A/B Testing. The following are some probable reasons for the discrepancy in the visitor count between Nelio A/B Testing and other Analytics tools (such as, for instance, Google Analytics):

  1. You limited the percentage of users that may participate in your experiments. Therefore, some of the users tracked by your Analytics tool are not included in Nelio.
  2. Your Analytics tool kicks in before Nelio A/B Testing, thus counting page views for the control page and the proper alternative.
  3. You’re comparing “page views” with “visitors”.

Finally, remember it doesn’t really matter if your tracking tools differ in the data they present. What’s important is that the numbers in each tool make sense and are coherent within that tool.