Apphia (Ἀπφία) is the Greek name meaning "beloved" or "increasing." In Philemon 1:2, Paul addresses his letter to "Philemon...
Apphia is rare but distinctive in NT scholarship.
Apphia does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Apphia reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.