Want to message someone in a Russian prison? There’s now an app for that. It costs about three rubles per text, once the censor signs off.

An ad for a messaging app called “Tochka Kontakta” (“Point of Contact”), designed for communicating with prisoners, has appeared on the ZT service’s website.

The human rights organization First Department flagged the ad.

The ad links to a separate website laying out the new app’s features. ...