The Storyteller SDK uses the Texture library to accomplish some of its functionality. This library is subject to the Apache 2.0 open source license. According to the terms of the license, it may be necessary to include a statement of this license somewhere in the app which integrates the SDK. You should consult your own legal advisor if you are unsure.
The text of the license is included below:
The Texture project was created by Pinterest as a continuation, under a different name and license, of the AsyncDisplayKit codebase originally developed by Facebook. All code in Texture is covered by the Apache License, Version 2.0. Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. 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