PERRLA Online is our web-based writing and research application. You can use PERRLA Online from almost any web-browser (including on tablets). However, we recommend the following web-browsers for the best experience.
Mozilla Firefox: https://www.mozilla.org/en-US/firefox/new/
Google Chrome: https://www.google.com/chrome/
Safari: http://www.apple.com/safari/
Whenever you use a web-browser, it's important that you are using the latest version. Using the latest version ensures that you are accessing the internet with the latest security updates and web standards.