---
title: Period comparison
description: Period comparison helps you to analyse the evolution of a metric for a given period of time. It compare the select date range to a previous symmetrical period.
---

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# Period comparison

## Period comparison helps you to analyse the evolution of a metric for a given period of time. It compare the select date range to a previous symmetrical period.

When activated, the period comparison displays how your metrics evolved in 2 different ways :

1. **In the metric**: the evolution in percentage between the current date range and the previous period
2. **On the graphic**: a lighter curve representing the previous period

The feature is available up to a 3-month date range.

It is available when you click on the date picker:

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