Surfie

Surfie is suitable with Android and iOS smartphones and tablets. It also includes a version for Windows computers. All variants allow you to filter and block online material that you do not want to expose your children to.

To be more specific, Surfie has 19 filter categories, which help you block websites classified as pornographic, violent, or online gaming. It is also possible for you to 'whitelist' websites that you think will pose no harm to your kids, or 'blacklist' certain pages that do not fall within a monitored group. Even better, aside from web filters, Surfie even enables you to govern when and how long your kid spends their time online, even on smartphones.

Surfie's keyword monitor is one of its greatest features; it notifies you if someone gives your kid a text, email, or instant chat, which contains words and expressions that are often considered red flags. Several pre-programmed phrases are included in the system, including "don't tell," "are you alone at home?" and "give me your phone number."

Ratings: 4.5 stars (from 30 reviews)

Price (per month): $6.65 (5 devices), $7.49 (10 devices), $8.32 (20 devices)

Buy it at: https://www.surfieapp.com/