Ask HN: What are your app ideas that have not been created yet?

a service to place phone orders for extra spicy dishes from ethnic restaurants with calls made by people who speak the language or at least have the right accent to ensure authenticity

a text processing algorithm to alter a document just enough to defeat stylometric analysis without changing the meaning

a service to connect people who need to write anonymous threatening messages with native speakers of Eastern European languages to get all the grammatical errors right

a discussion forum called "who would win", wherein participants nominate fictional or historic figures to compete against each other in a fight and explain why think one would beat the other