This smells like a thinly veiled attempt at marketing for Freedom, rather than solving the problem. Sort of like "it's ok to binge drink all weekend because of this app, but not on a work day!" sort of mentality.
Nobody prevents you from using Freedom in your free time as well. I have it blocking addicting sites 24/7 on all my smartphones, it has worked fairly well.
idk sounds kinda fucked up to need an app that turns a smartphone into a dumbphone.