There is a problem with in-app subscriptions which is rarely brought up - - apple/google cut. OK for a $2 purchase. Not OK for recurrent payments. If it is ind

There is a problem with in-app subscriptions which is rarely brought up - - apple/google cut. OK for a $2 purchase. Not OK for recurrent payments. If it is indeed a valuable service, it should have a web site. More often than not online subscriptions will be priced more competitively. See Babbel subscriptions in app and online.