QMUL Mobile App: Amongst many other useful functions, the mobile app allows the user to search Library Discovery, and check their library accounts.
Many databases have apps, which allow the user to access material on tablets/iPads:
ACS Mobile Apps: American Chemical Society offers a range of mobile apps to broaden accessibility to their products.
MyKnovelToGo: Allows users to access material from Knovel on their tablets.
MyXplore App: IEEE Xplore's companion for IOS and Android which allows you to set up alerts when new documents are available through IEEE Xplore in your favourite field.
NLM's Mobile Applications: United States National Library of Medicine offers a range of mobile apps for various resources. The database PubMed is part of this offering.
ReactionFlash: Learn about 600+ named chemical reactions and connect with literature about these reactions through Reaxys.
There are also services, which are centered around browser extensions. They can be useful discovering and accessing resources. For example:
Kopernio: Browser extension which tries to make it easier for the user to search and download documents within their library's subscription, when not available, it tries to source it through Open access.
Open Access Button: Browser extension which enable users to search and download Open access articles.
Unpaywall: Browser extension, which enable the user to search and download Open access articles.
Altmetric Bookmarklet: Allows the user to access the latest Altmetric impact statistics for specific journal articles on their browsers.
Endnote: Endnote has both an IOS app and a bookmarklet. The IOS app allow the user to access their references and read their PDF on the go. The bookmarklet allows the user to easily grab references from websites.
Mendeley: There is an Mendeley app for both IOS and Android. Mendeley also offers a bookmarklet, which allow the user to easily grab references from websites.