The thing that stings is not the deletion. It is realising that everything you set up sat behind a button anyone could press.
What is actually happening
Chrome's extensions page is part of Chrome, not part of any extension in it. The browser deliberately refuses to let extensions run on its own internal pages: they cannot inject anything into that page, cannot read what is on it, and cannot be notified in time to argue with a removal. That is a security rule, and it is a good one. An extension that could stop you uninstalling it would be malware by any reasonable definition.
Which means the honest version of the answer is this: no browser extension can prevent its own removal. Not this one, not a paid one, not one that says otherwise on its pricing page. If a product implies it cannot be uninstalled, read that claim carefully, because the browser does not offer anybody that power.
So the question changes shape. It is not "which blocker survives being deleted", it is "who is allowed to press Remove on that computer". And that is decided one level down, by the account your child signs into the machine with, not by anything running inside the browser.
There is a second, quieter part. Removal is silent from your side. Nothing tells you it happened, so you find out the way you found out — by opening the laptop and noticing an empty toolbar, days later, with no idea which days were covered and which were not. Every judgement you made in between was based on a rule that was not running.
You can test the whole thing in two minutes. Sign in to the computer as your child, open the extensions page, and try to remove it. If it comes off, the account they use still has rights it should not have, and no amount of software is going to change that.
The three places this goes wrong
1. Your child is an administrator on the computer. On most family laptops there is one account and everyone uses it, which means everyone is the administrator. An administrator can install anything, remove anything and undo anything you set up. This is the single biggest one, and it is free to fix.
2. You reinstalled it and stopped there. Putting it back restores the tool but not the reason it came off. If nothing about the account changed, you have bought yourself the number of days it takes your child to remember that Remove is still there.
3. You are treating it as defiance rather than as an open door. A ten-year-old who finds a button that ends an argument will press it. That is not a character flaw. It is a door left open in a room full of people who like doors.
How to make it hold
Do the account step first, because it is the only part that actually closes this. On Windows and on a Mac, make your child a standard account on that computer — their own login, without administrator rights — and keep the administrator account for yourself, with a password they have never watched you type. Removing an extension, installing software and changing machine-wide settings all sit behind that.
Then make everything else worth protecting. In Parentech the list, the settings, ending a class early and opening a blocked site all need your six-digit PIN, and the dashboard locks itself the moment it is closed rather than staying unlocked behind a tab. So the only remaining move is uninstalling, which is the move you have just taken away.
Finally, tell them it is there. Install it while they watch. A rule that is discovered feels like surveillance and gets treated like an enemy. A rule that was announced gets argued with instead, which is the outcome you want.
The part that needs you not to be there
Here is the awkward arithmetic of a removal: it takes four seconds, and you find out hours later.
If the extension comes off at half past four, the gap is not four seconds long. It is the rest of the afternoon and evening, plus however many days pass before you next sit at that computer. The damage is entirely in the gap, and the gap exists because you are somewhere else.
Two things shorten it. The first is that your rules live in your account rather than only in that one copy of the extension, so restoring them is signing in again, not an evening of retyping a list you half remember. The second is your phone: sign in at parentech.app, check the rule, lock the dashboard, change what needs changing, from the bus or the office. Changes reach the computer within half a minute.
And be clear about which part is paid. Everything on this page works free on one computer, PIN and all. The plan adds the other computers in the house, a different set of rules on each, and your phone. If there is one laptop and you are usually next to it, the free version is the whole product.
What this still does not reach
- A child who is an administrator. Nothing in this list beats that, and no product can honestly claim otherwise.
- A phone or a tablet. Parentech guards Chrome on the computer it is installed on.
- A second browser installed on the same computer. The account step covers it. Software does not.
Questions parents ask
Can I stop them uninstalling it?
Not from inside the browser, and be wary of anyone who says they can. What you can do is take away the rights that let them, by giving them a standard account on the computer instead of an administrator one.
Will I know if it was removed?
Not from Parentech. It stops running, and a program that is not running cannot report anything. The check is to open their Chrome and look at the toolbar, which is why the account step matters more than any alert would.
They reinstalled it themselves to look innocent. Now what?
Then they have signed in to nothing, and the rules are not theirs to restore. Your account holds the list and your PIN unlocks it. A reinstalled copy without your sign-in is an empty one.
If this is happening to you, one of these usually is too
They keep unblocking the site · They installed a second browser · They changed the PIN
More on how blocking works: Block websites. Free on one computer — what it costs for the rest of them.