Perhaps. A/B testing probably is necessary. I would try and some way emphasize the numerology part is just a game, entirely optional and doesn't interfere with the actual job the app does - suggesting names.
Another, a more rational extra feature I can think of is providing a clue on how easy it is going to be for speakers of different languages to pronounce the name or to spell it in their alphabet.
Some clue on the etymological meaning/history of the name and history of some notable people named this way, etymological counterparts in other languages, some fun facts like "how do you spell it in tengwar", statistical data on where and when was the name popular, cultural data like if it sounds close to some specific word in some specific language etc should probably also be there.
Another, a more rational extra feature I can think of is providing a clue on how easy it is going to be for speakers of different languages to pronounce the name or to spell it in their alphabet.
Some clue on the etymological meaning/history of the name and history of some notable people named this way, etymological counterparts in other languages, some fun facts like "how do you spell it in tengwar", statistical data on where and when was the name popular, cultural data like if it sounds close to some specific word in some specific language etc should probably also be there.