Can I Run Multiple Tests at the Same Time?

Yes. Nelio A/B Testing allows you to run multiple tests simultaneously in most situations.

For example, you can run:

• Two page tests on different pages
• A headline test and a CSS test
• A product test and a menu test
• Heatmaps alongside A/B tests

However, there are a few important limitations you should be aware of.

Limitations When Running Multiple Tests

1. The Free Version Only Allows One Test at a Time

With the free version of Nelio A/B Testing, you can only run one active test. To run multiple tests in parallel, you need a premium plan.

2. You Cannot Test the Same Element in Two Tests at Once

A single element (page, post, theme, widget, menu…) cannot be tested in more than one test simultaneously.

Examples:

• You cannot run two tests on your landing page at the same time.
• You cannot run two theme tests at once.

This prevents conflicts such as a visitor being assigned two different variants for the same element.

3. You Cannot Run Tests That Affect the Same URL Scope

Some tests let you define the set of URLs they apply to (e.g., theme tests, widget tests, CSS tests, menu tests). You should only run one test at a time per affected URL.

This avoids conflicts such as:

• A theme test changing the layout
• A widget test altering sidebar content
• A CSS test modifying styles

…all on the same pages simultaneously.