Even if you had bought your kids similar phone, very high chances they will try to save enough money to invest in another phone for a more personal experience.
Despite its noble intention, I do feel that Retina-X Studio's Mobile Spy is good for the economy as such that:
- Some companies will invest in it
- People who feel that privacy has been invaded will invest in other phones
This is similar to the concept of Apple computer where if you had an Apple computer, high chances you will have a PC side by side.