Crescendo is a beautiful, custom branded sales enablement and presentation application. It allows for an easy management and presentation of the documents stored on the cloud storages (Sharepoint, Salesforce, Google Drive, OneDrive and Box). The application works both online and offline, providing access to up-to-date company resources at any time. Crescendo is an easy-to-use mobile tool with many powerful features and intuitive navigation. For more information, check the official app website: https://crescendoapp.com/ App info is currently processing and/or the app is not yet fully available for sale on the US App Store.
Crescendo application offers a free month trial to anyone who wants to try it out. It may just turn out to be exactly what you are looking for.