Some users have reported problems when using the Kurio 7S.
The Kurio Store has only a limited number of apps available, compared to the larger Android markets, but this can be solved by easily installing the Amazon Appstore or, with a bit more effort, Google Play.
There have been problems with younger children breaking the tablet, despite the protective bumper, so probably they should be supervised when using it, as any tablet tends to be fragile.
The device has for some users got too warm whilst using, and then stopped working, so it should probably not be used for too long at a time.
As with any computer device, it is possible that it will need restoring to factory settings if it should go really wrong.