Wayback Machine

Wayback Machine is an app that lets you save webpages to the eponymous digital archive service so that any user can access them in the future. All you have to do is tap the 'share' button when you're on a webpage in whatever Android browser you use, and then pick Wayback Machine. In a matter of seconds, the process is finished and the page is archived.

It's important to keep in mind that this app doesn't actually give you access to Wayback Machine. It's not even a webview of the Wayback Machine site. Its sole and exclusive use is to help Archive.org by sending your own pageviews to Wayback Machine. And it gets this job done brilliantly.