Your filthiest diary, behind Face ID.

Bud is a private iPhone journal for the people you hook up with and date, the times you play, and the tests you take. It lives on your phone, behind Face ID, and we can’t see a thing.

One email list for the waitlist and the newsletter. We don’t track opens or clicks, and you can unsubscribe anytime. See our privacy policy.

Face ID lockEnd-to-end encrypted iCloud syncNo ads, no account
Two men cheek to cheek, one blindfolded with a bandana, both smilingSaved to Rio’s page

What Bud keeps

The little black book, rebuilt for your phone.

Three tabs, one record per person. No more guessing who “Blue hat, Thursday” was.

Buds

Everyone you’ve met

A photo, how you met, whether they can host, and what they’re into. Add someone from a dating-app screenshot and Bud fills in the rest on your phone.

How you metCan hostRelationshipPronouns
Wed28
Thu29
Fri30
Sat31
Play

Every time you play

Who, when, where, what you got up to and what protection you used. A calendar and stats show you the year, privately.

WhoWhereProtectionPhotos and videos
Last testNext test due
Aug 12Nov 12
Health

Every test, on schedule

Log HIV and STI tests, set a reminder for every 1, 3 or 6 months, and find free or covered testing near you first.

HIVSyphilisChlamydiaGonorrhea

Your year in play

Count what counts.

Every time you log play, Bud keeps score: loads, buds, nights and what you got up to. Your sex life in numbers you’ll actually enjoy looking at.

  • Know your numbersLoads given and taken, nights out, new buds and regulars. Every stat, all year.
  • Find your favoritesWho you see most, who you’d call again, and the nights worth remembering.
  • Watch your year heat upYour busiest months, longest streaks and personal records, charted.
  • Bragging rights, privatelyYour counts never leave your phone. Show them off only if you want to.

Privacy, by design

Built so we can’t read your journal.

There’s no Bud account and no Bud server holding your entries. That’s the whole design, not a setting.

What we see: nothing.
Your journal stays on your iPhonePeople, nights, photos, notes and test results are stored on your device.
On device
Sync goes through your own iCloudEnd-to-end encrypted with keys only your devices hold. Not us, not Apple.
Optional
The AI runs on your phoneScreenshots are read on-device and never uploaded to us or an AI provider.
On device
Faces blurred until Face IDPhotos and videos stay inside Bud, never in your camera roll.
Always
Usage stats are off unless you turn them onA short, public list of events, and never anything from a health feature.
Opt-in
No ads, no data salesNo advertising SDKs. Sexual and health info never goes to advertisers.
Never

How it works

Three taps after a night out.

  1. 9:41●●● ▮
    Locked. Your buds stay
    between you and Face ID.
    Unlock with Face ID
    Step 1

    Open it with your face

    Bud locks every time you leave. Anyone who picks up your phone sees a black screen and a logo.

  2. 9:41●●● ▮
    Search buds
    AllHostsTravelsRegulars
    Jordan
    Sam
    Alex
    Rio
    Theo
    Kai
    Remy
    Jules
    Max
    Ash
    Dev
    Nico
    Step 2

    Find or add your bud

    Pick them from the grid, or drop in a profile screenshot and Bud makes their page.

  3. 9:41●●● ▮
    CancelLog playSave
    Who
    Rio
    Theo
    Sam
    Kai
    Remy
    When
    Wed28
    Thu29
    Fri30
    Sat31
    Where
    My placeTheir placeHotel+ Add
    Protection
    PrEPCondomDoxyPEPNot sure
    Save to Rio’s page
    Step 3

    Log play

    Tap who, when and what protection. It all lands on their page and in your stats.

Pricing

Try everything free for 14 days.

Then keep Bud for less than a test kit. No monthly plan, no ads.

Yearly

$9.99a year

Renews each year through the App Store. Cancel anytime in Settings.

Best value

Lifetime

$39.99once

Pay once and keep Bud, with every update.

Day 1Everything unlocked→Day 11A heads-up in the app→Day 14Pick a plan

If you don’t pick one, everything you logged stays readable and exportable. Prices in USD. You pay Apple, and Apple handles refunds.

Questions

Asked, answered.

Can anyone else see who I’ve logged?

No. Your journal is on your iPhone and, if you turn on sync, in your own iCloud with end-to-end encryption. We don’t have a copy and can’t read it.

Do I need an account?

No. There’s no sign-up, no email and no password. You buy Bud through your Apple ID like any other app.

What if I lose my phone?

With iCloud sync on, your journal comes back when you sign in on a new iPhone. Without it, export a backup from Settings now and then.

Is Bud on Android?

Not yet. Bud launches on iPhone in the US first. Join the list and we’ll email you when that changes.

Who makes Bud?

Kin Money, LLC in San Francisco, the small team behind the Kin money app.

Testing3 mo
From the blogHow often should you get tested for STIs?A plain STI testing schedule by situation, from one steady partner to PrEP, what to ask for at the clinic, and how to remember your next test.
Read it

Keep your black book in your back pocket.

One email list for the waitlist and the newsletter. We don’t track opens or clicks, and you can unsubscribe anytime. See our privacy policy.