Depending on your version of Android and ‘Stay Focussed’ App, you should be prompted for a 6-digit passcode, but some versions will ask for 4-digit
You should pick a random 6 digit number that is not easily remembered (not 123456, or any pattern on the keypad that you will remember! e.g. 123987 as you may remember it as a square!)
Next you must install an App called ‘Stay Focused’ (free) from google play store.
Once installed, open the app and choose ‘grant access’ , scroll down and give access to ‘stay focused’. This allows Stay Focused to monitor other apps
Click ‘create profile’, and choose a name (e.g. block apps), and search the app you wish to block (e.g. Grindr, recon, etc.), and tick the box to the right to choose it
Click next (top right corner), and choose from any number of options to block.
E.g. to block all day Fri, Sat, Sun, choose ‘ specific time intervals’, enable ‘app launch’ and ‘notification’ (you have to allow this), then tick F(ri) , S(at), S(un) in ‘On Days’ section
Click ‘Add’ in the ‘in intervals’ section at the bottom, and using the dial, select the time from 00:00AM -> 11:59PM
Click ‘save’ in top right hand corner
On the main screen again, enable ‘lock mode’