![31-Day Challenge](https://is4-ssl.mzstatic.com/image/thumb/Purple115/v4/e8/0a/bf/e80abfe5-a9d7-0f81-6baf-0666d476389c/source/512x512bb.jpg)
This May, kick off your 31-Day Challenge and support breakthroughs at Children's Hospital of Philadelphia
![This May, kick off your 31-Day Challenge and support breakthroughs at Children's Hospital of Philadelphia](https://is4-ssl.mzstatic.com/image/thumb/Purple115/v4/e8/0a/bf/e80abfe5-a9d7-0f81-6baf-0666d476389c/source/60x60bb.jpg)
31-Day Challenge
![31-Day Challenge](https://is4-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/2f/08/38/2f0838c3-44a0-d82c-e0d2-89eb7651504c/c18812a3-65a2-4007-b7fc-685285c8f71b_Activity-iOS_iPhone_7_Plus_chopday.png/750x750bb.jpeg)
![31-Day Challenge](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/25/bc/60/25bc60b1-22fc-5f7a-d98b-c5d92321b4cc/b262b069-cb2d-4df6-b114-8aa6850cae27_Get_Active-iOS_iPhone_7_Plus_chopday.png/750x750bb.jpeg)
![31-Day Challenge](https://is4-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/6f/d2/78/6fd278d7-b947-58c7-f793-41c005dd229d/854aa0ee-00a3-447b-9266-47e5510203db_Home-iOS_iPhone_7_Plus_chopday.png/750x750bb.jpeg)
What is it about?
This May, kick off your 31-Day Challenge and support breakthroughs at Children's Hospital of Philadelphia. The 31-Day Challenge app will not only connect to Apple Health Kit to track your physical activity but also allow you to update your fundraising page, send e-mails, check your progress to goal and much more- all from the palm of your hand.
![31-Day Challenge](https://is4-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/2f/08/38/2f0838c3-44a0-d82c-e0d2-89eb7651504c/c18812a3-65a2-4007-b7fc-685285c8f71b_Activity-iOS_iPhone_7_Plus_chopday.png/750x750bb.jpeg)
App Screenshots
![31-Day Challenge screenshot-0](https://is4-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/2f/08/38/2f0838c3-44a0-d82c-e0d2-89eb7651504c/c18812a3-65a2-4007-b7fc-685285c8f71b_Activity-iOS_iPhone_7_Plus_chopday.png/750x750bb.jpeg)
![31-Day Challenge screenshot-1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/25/bc/60/25bc60b1-22fc-5f7a-d98b-c5d92321b4cc/b262b069-cb2d-4df6-b114-8aa6850cae27_Get_Active-iOS_iPhone_7_Plus_chopday.png/750x750bb.jpeg)
![31-Day Challenge screenshot-2](https://is4-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/6f/d2/78/6fd278d7-b947-58c7-f793-41c005dd229d/854aa0ee-00a3-447b-9266-47e5510203db_Home-iOS_iPhone_7_Plus_chopday.png/750x750bb.jpeg)
![31-Day Challenge screenshot-3](https://is2-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/7d/2f/4a/7d2f4a3a-813b-28bb-dc31-860ac6956995/d69bcfcd-720e-4fdb-8a21-61b5fe5825af_Login-iOS_iPhone_7_Plus_chopday.png/750x750bb.jpeg)
![31-Day Challenge screenshot-4](https://is5-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/df/38/b0/df38b093-4605-8080-683e-3d35f29cd5ad/46ba37da-8e40-43cf-b7df-bd4010ff625e_Send-iOS_iPhone_7_Plus_chopday.png/750x750bb.jpeg)
App Store Description
This May, kick off your 31-Day Challenge and support breakthroughs at Children's Hospital of Philadelphia. The 31-Day Challenge app will not only connect to Apple Health Kit to track your physical activity but also allow you to update your fundraising page, send e-mails, check your progress to goal and much more- all from the palm of your hand.
Please note: The 31-Day Challenge iPhone application is only available to current registrants of the event. If you haven't registered yet for this year's event, please go to 31days.chop.edu to register.
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