Dictionary of Japanese Names

This gives a lot of readings for names, but it doesn’t do a good job of telling you which names/readings are common and which ones are rare.

This app really fills a gap! I have English-Japanese dictionary apps and Japanese-Japanese dictionary apps, but they don't contain names. This app quickly finds peoples' names and has been a great conversational ice-breaker for me dozens of times, since when someone tells me their name I can type in the reading and then show them the phone so they can pick out the kanji combination for their name. Over and over again, Japanese people are amazed by this app. I love it.