Ap
Part of speech: adjective
Definition: In or relating to the apothecaries' system of measures.
App
Part of speech: noun
Definition: shortening of application.
Ap as an adjective is in or relating to the apothecaries' system of measures. while App as a noun is shortening of application.
Part of speech: adjective
Definition: In or relating to the apothecaries' system of measures.
Part of speech: noun
Definition: shortening of application.
We hope you now know whether to use Ap or App in your sentence.