How to set parental controls on android?

Question

Android

Good day.
I immediately apologize if I do not know how to google - for several days I have been looking for a solution to my problem.
The task is as follows: there are several tablets for android. They have navigation software. The tablets will be operated far from the home office. Tablets have access to the Internet for software updates. It is necessary to prohibit:
- visiting sites other than those allowed;
- launch and installation of software. except for running authorized software.
Worked up several solutions:
- Android user profiles. Available only from 4.3. There is no possibility to update.
- Various software requiring root access. It is impossible to rut - under warranty, they bought tablets not in a regular store, but from a company that supplies software.
- avast mobile premium - no site control, only prohibition of software launch.
- norton family - the program meets all the requirements + agent management via the Internet, application control is only in the paid version. You need to buy at the jur. face - not in one of the software stores this thing is not (or I was looking badly).
- Kaspersky Parental Control - there are mentions, but I can't find them anywhere.
Has anyone had similar issues? How did they decide?

Answer 1

www.kaspersky.ru/multi-device-security?&campaign=k...
www.kaspersky.ru/news?id=207733700
products.drweb.com/mobile/?lng=ru

Answer 2

www.opengsm.ru/price_prox.php