Coming
AndroidA calm barrier between you and the impulse
Bastion is a simple Android tool that removes the easy access to porn. It is built on one principle: your data must never leave your phone.
It is not a miracle cure. But it gives you the seconds back — enough time to make a different choice than the impulse would have made for you.
Android only. An iOS (Apple) version is not on the drawing board right now.
In development · last updated July 2026
How to get it
When Bastion is ready, you will be able to scan a QR code here and install it straight from this page. No account, no waiting list, no email.
How it is designed
Runs locally on your phone
All filtering happens on the device itself. Nothing gets sent away, because there is no server to send it to. Your behaviour is yours alone.
No account, no cloud
No sign-up, no login, no email to hand over. Bastion works even when you are offline, and there is no profile for anyone to look into.
A keyword filter you control
Blocks explicit content based on a local list of keywords. The list lives on your phone, and you can extend it yourself so the filter fits you.
PIN lock for weak moments
Protect the settings behind a PIN, so turning the filter off requires a deliberate choice. An extra hurdle exactly where you need one.
Bastion cannot be downloaded yet. It is in development, and when it is ready it will live on this page.