The Cochrane Library, hosted by Wiley is a mobile friendly site. You should be able to access the database from your tablet or phone using the URL's from the library.
Cochrane Library does have a free app that is available from Google Play or the iTunes Store. This app is not related to the library's subscription and contains abridged Systematic reviews. From the publisher:
The Cochrane Library app is the perfect format for catching
up on the latest evidence from the Cochrane Database of
Systematic Reviews. The app includes exclusive monthly
issues containing the best of the previous month’s
Cochrane Reviews, specially chosen by the Cochrane Library Editor in Chief.
Downloadable Cochrane Review content for reading offline.
A Bookmark feature for creating your own topic-based collections of Cochrane evidence.
Abridged Cochrane Reviews for the best possible tablet and phone reading experience.
Update: Monthly issues will cease after Issue 12 (December), 2021.
All downloaded content will continue to be available within the app.