There are a lot of differences between Bark and Qustodio. Bark is more expensive and has more products, which could be confusing. Qustodio offers email support only on its most expensive plan and shares some data. Bark sells a phone with the software preinstalled, which could be a great option for anyone not wanting to figure out the configuration and compatibility with their child’s current device. Qustodio offers a free plan, so even parents on a budget can have some peace of mind protecting their children. The differences mostly come down to personal preference.