> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# thirty-day New User Retention Report

> Overview of the PlayFab Thirty-Day New User Retention report, showing the percentage of each new-player cohort that returns to your game across 30 days.

# Thirty Day New User Retention report

The Thirty Day New User Retention report tracks the percentage of new user cohorts who return to the game on subsequent days.

A Cohort of players is defined by grouping newly registered players on a given day (**Day 0**) and their retention is tracked over a 30-day period.

Cohort size is determined by the number of players within it.

The example report shown below, was generated on **2/5/2018**. On **1/6/2018**, **39,132** new players created accounts in the example title.

![Thirty-day New User Retention Report Table](https://mintcdn.com/microsoft-4404708b/MjJ0-cTsb1bpaMcX/images/playfab/data-analytics/learn-data/reports/tutorials/thirty-day-new-user-retention-report-table.png?fit=max\&auto=format\&n=MjJ0-cTsb1bpaMcX\&q=85\&s=c73152a1102c63e05571e23cbfe421a4)

Since **Day 0** is an initiation date for a new Cohort, this column always has **100%** retention rate.

Then **33.84%** of those players logged in again the *next day*, **24.64%** in *two days* later, and so on. **10.84%** of the Cohort returned on the *30th day*, which corresponds to **2/5/2018**.

For additional details, see [Metrics and Terminology](https://devdocs.xbox.com/services/playfab/data-analytics/learn-data/reports/metrics-and-terminology.md).

## Populating the report

To populate this report, you must register a player and then have them log in for several days in a row at least once.

This, however, will produce trivial results, (with **100%** retention for each day).

Throwing more players into the process and skipping some days will produce more interesting results.

The following API calls may be used to log in:

* [LoginWithAndroidDeviceID](xref:titleid.playfabapi.com.client.authentication.loginwithandroiddeviceid)
* [LoginWithCustomID](xref:titleid.playfabapi.com.client.authentication.loginwithcustomid)
* [LoginWithEmailAddress](xref:titleid.playfabapi.com.client.authentication.loginwithemailaddress)
* [LoginWithFacebook](xref:titleid.playfabapi.com.client.authentication.loginwithfacebook)
* [LoginWithGameCenter](xref:titleid.playfabapi.com.client.authentication.loginwithgamecenter)
* [LoginWithGoogleAccount](xref:titleid.playfabapi.com.client.authentication.loginwithgoogleaccount)
* [LoginWithIOSDeviceID](xref:titleid.playfabapi.com.client.authentication.loginwithiosdeviceid)
* [LoginWithKongregate](xref:titleid.playfabapi.com.client.authentication.loginwithkongregate)
* [LoginWithPlayFab](xref:titleid.playfabapi.com.client.authentication.loginwithplayfab)
* [LoginWithSteam](xref:titleid.playfabapi.com.client.authentication.loginwithsteam)
* [LoginWithTwitch](xref:titleid.playfabapi.com.client.authentication.loginwithtwitch)
* `LoginWithWindowsHello`\<!-- [LoginWithWindowsHello](xref:titleid.playfabapi.com.client.authentication.loginwithwindowshello) -->

To register a player you may use the following API calls:

* [RegisterPlayFabUser](xref:titleid.playfabapi.com.client.authentication.registerplayfabuser)
* `RegisterWithWindowsHello`\<!-- [RegisterWithWindowsHello](xref:titleid.playfabapi.com.client.authentication.registerwithwindowshello) -->

You may also use the following API calls to register and log in simultaneously if the `CreateAccount` flag is set:

* [LoginWithAndroidDeviceID](xref:titleid.playfabapi.com.client.authentication.loginwithandroiddeviceid)
* [LoginWithCustomID](xref:titleid.playfabapi.com.client.authentication.loginwithcustomid)
* [LoginWithFacebook](xref:titleid.playfabapi.com.client.authentication.loginwithfacebook)
* [LoginWithGameCenter](xref:titleid.playfabapi.com.client.authentication.loginwithgamecenter)
* [LoginWithGoogleAccount](xref:titleid.playfabapi.com.client.authentication.loginwithgoogleaccount)
* [LoginWithIOSDeviceID](xref:titleid.playfabapi.com.client.authentication.loginwithiosdeviceid)
* [LoginWithKongregate](xref:titleid.playfabapi.com.client.authentication.loginwithkongregate)
* [LoginWithSteam](xref:titleid.playfabapi.com.client.authentication.loginwithsteam)
* [LoginWithTwitch](xref:titleid.playfabapi.com.client.authentication.loginwithtwitch)


## Related topics

- [Reports quickstart](https://devdocs.xbox.com/services/playfab/data-analytics/learn-data/reports/quickstart.md)
- [Metrics and Terminology](https://devdocs.xbox.com/services/playfab/data-analytics/learn-data/reports/metrics-and-terminology.md)
- [thirty-day Retention Report](https://devdocs.xbox.com/services/playfab/data-analytics/learn-data/reports/thirty-day-retention-report.md)
- [Thirty-day New User Conversion Report](https://devdocs.xbox.com/services/playfab/data-analytics/learn-data/reports/thirty-day-new-user-conversion-report.md)
- [Daily, Monthly, and Rolling 30-Day Overview and Totals Reports](https://devdocs.xbox.com/services/playfab/data-analytics/learn-data/reports/daily-monthly-and-rolling-30-day-overview-and-totals-reports.md)