someone please help me figure out tapas

so, i created a tapas account so i could support the creator of k's secret (since it's so amazing!), and i'm really confused about something. so, tapas says you can only buy mature episodes on their website, but they don't offer the 20% off one-tap on the website (only on the app). i don't know whether or not i should take my chances and buy the episodes on the app for a discounted price, or just pay full price for the guaranteed mature scenes. (also, i use an android and i know apple banned mature content on the tapas app. i'm not sure if it's the same thing on androids because i haven't been able to find anything about it). please help me i don't wanna waste ink on chapters that don't have the mature scenes <3