Every step between a match and a first date

Hi Product Hunt,

I'm Kaori, founder of 9ONE0.

I come from a family of detectives. My father, both of my grandfathers and my uncle all investigated serious crimes in Japan. I grew up checking facts before trusting a story. For years, my girlfriends sent me a name, sometimes just a phone number, before a first date.

Often a phone number was all I needed.

I built 9ONE0 so every woman can arrive at every date with that same clarity.

Online is now the No. 1 way US couples meet. 57% of US women say dating apps aren't a safe way to meet people.

What's live today:

• Safety intelligence. Enter the number he gave you. Get a color rating, a plain-English summary and six sections of public record. He's never notified.

• Safety check requests. Free to ask. He runs a check on himself, sees it first and shares a Trust Card. Criminal, sex offender, eviction and federal lawsuit results are always shared.

• The Vault. A free, encrypted dating journal. Log dates, tap green and red flags, see your patterns and reach your safety contact in one tap.

Checks start only from a number you were given. No name, email or address search. A check is $25. The Vault is free. Covering 45 states today, California opens January 1, 2027.

What would you want to know before a first date?