Age Rating
4+
Apps in this category do not contain restricted content.
9+
Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.
12+
Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.
17+
You must be at least 17 years old to access this App.
Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.
ENDL Screenshots
ENDL posterENDL posterENDL posterENDL posterENDL poster

About ENDL

ENDL is an observational research study at Columbia University to understand the relationship between quality of life, the menstrual cycle, and pain.

Columbia University invites you to join this study to enhance understanding about the relationship between the menstrual cycle, pain, and quality of life.

You can participate in short daily and longer monthly study surveys at your convenience using the ENDL app. You can stop participating at any time.

How this study works:
- You will be able to join the study after signing the consent form.
- We will ask you to answer a daily survey every day for at least 90 days.
- We will ask you to answer a monthly survey every month for at least 3 months.
- All information collected will be stored separately from user name using an id number.

Who is eligible to participate?
- Adults who have reached the onset of menarche, that is, who have had at least one menstrual period.
- Those over the age of 18

Who is running this study?
- Researchers from Columbia University’s Department of Biomedical Informatics as part of the Citizen Endo research project.


ENDL – A study to understand the relationship between quality of life, the menstrual cycle, and pain
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What's New in the Latest Version 1.3

Last updated on Sep 7, 2017
Old Versions
This app has been updated by Apple to display the Apple Watch app icon.

Improved on-boarding screens.
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Version History
1.3
Sep 7, 2017
This app has been updated by Apple to display the Apple Watch app icon.

Improved on-boarding screens.

ENDL FAQ

Click here to learn how to download ENDL in restricted country or region.
Check the following list to see the minimum requirements of ENDL.
iPhone
ENDL supports English

ENDL Alternative

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