olemus
tõkestav tarkvarakomponent, mis väldib mingi(te) rakendus(t)e kasutamise
= a software product for blocking unwanted applications

näiteid
https://play.google.com/store/apps/details?id=cz.mobilesoft.appblock&hl=en
https://latenode.com/blog/best-apps-to-help-you-focus-and-block-distractions