Your own words
When you block a site you write down why. If you try to lift the block later, that is the first thing you see: your reason, as you wrote it.
When you block a site, you write down why. If you later try to lift the block, you are shown your own words, then asked to wait: a gentle space between you and whatever you are trying to stay away from.
Most blockers are easy to switch off, and most people switch them off. One
person on r/pornfree put it this way: I have tried different apps that
block websites, but I just always bypass them.
Is that a flaw in the
person? It is easy to read it that way, and most people read it that way
about themselves. The plainer explanation is that a switch behaves the
same on every day of your life and you do not, so the tap that costs you
nothing on a settled afternoon costs you nothing at eleven at night
either, when it is the only thing standing where you are looking.
When you block a site you write down why. If you try to lift the block later, that is the first thing you see: your reason, as you wrote it.
Ten minutes to an hour, chosen when you set up. Close the app if you like; the countdown carries on and does not reset. Nothing will notify you when it finishes. If you still want it then, come back.
Type a short phrase to finish. The site opens for fifteen minutes and then locks itself again. You do not have to remember to put it back.
Blocking works by domain name, so it cannot block a single page or a site reached by a raw IP address. A browser using its own secure DNS will bypass it. Android allows one VPN at a time, so B-Simple cannot run alongside another. No list catches everything.
That holds in the free version and after paying. There is no device-admin lock and no extra confirmation, and it does not nag you to put it back. A lock you set yourself can always be undone, so the effort went into the wait instead. Why there is no uninstall lock is the longer answer.
Blocking is free, and so is safe search. The free app gives you:
One payment of £3.59 adds a curated list of around 4,750 adult sites, kept clear of health, education and support services, along with importing your own lists and keyword blocking. It is paid once, through Google Play, which also handles any refund. There is no subscription and no account, and there is no advertising in either version. Among the subscription blockers the loudest complaints are about money, which is why the money side here is kept as plain as it can be.
Nothing about you leaves your phone, and this is how that works.
It has no opinion about what you block or why. The only reasons on its screens are the ones you wrote, and nobody else sees them. There is no partner to notify and no report to anyone.
Uninstalling is not obstructed - if you need this, keep it. Strengthen your volition.
Why blockers stop working is the longer answer, if you have tried one before and it did not hold.