Board Thread:The Quarters - Q & A/@comment-174.54.11.155-20140517003811/@comment-24150802-20140517011746

One browser per account is the most reliable way. It's what I do to manage my home and work accounts. Browsers I can suggest are Chrome, Chromium, and Firefox. Internet Explorer is buggy and not recommended.

HabitRPG does have a beta site: https://beta.habitrpg.com/. It uses exactly the same data as the main site (i.e., if you logged in to both sites you'd see the same tasks, and they'd stay in sync). You could use the normal site for one child and the beta site for the other, and have both running in the same browser at the same time. Note though that that beta site is used for testing new features before they are moved to the main site, so sometimes the beta site will look or behave differently than the main site, and occasionally it will have bugs, but many people do use the beta site though to get quicker access to new features and most of the time it works very well.

There are also two Android apps and at least one iPhone app, so you could use those too (you could have a different child logged in on each Android app on the same phone). However the phone apps do not have all of the functionality of the main site, and do not display the avatars as well.