LinkLocker is now a Progressive Web App (PWA), and it can be installed on both mobile and desktop devices. The easiest way to install on a laptop or other dekstop computer is simply to visit the site in Chrome, and follow the prompt to install from there. The exact sequence varies a little from one mobile platform to the next, but here's the basic gist.
While we still hope to make some fully featured native apps available, the new PWA functionality will somewhat bridge the gap between where we are now and where we want to go. Give it a try and let us know what you think.