Troth

Love isn't a feeling. It's what you do.

A private, encrypted home for your marriage — where the conversations, memories, letters, and promises you're keeping all live in one place. Coming to iPhone.

Built by Clark and Carrie Sell in partnership with couples like you who are on this list. Sealed for two, you. Never us. Never anyone else.

Who Troth is for

For any marriage worth doing well.

Not only for marriages in crisis, and not only the ones with everything figured out. It's for the couples in between — which is to say, most of us.

Year oneStill learning to live in the same room.
Year sevenKids are small; the marriage is easy to overlook.
Year fifteenDeciding whether to grow into the next season.
Empty nestersFiguring out who they are as two again.
Any hard yearSomething happened, and now they're rebuilding.

Every one of you belongs here — and the earlier you start, the more Troth becomes over the years. It meets the two of you where you are, with a gentle question now and then, never a demand.

A question, if you'd like one
Where did the two of you feel most like a team this week?
The problem

Your marriage has been living in borrowed rooms.

The message that mattered when it arrived. The photo from a trip that changed something. Try to find it three years later — it's buried in iMessage, Photos, and Notes, under the grocery lists, the carpool, the group thread with the in-laws.

Your marriage doesn't own any of those apps — it's borrowing space in the same place your kids are texting from. Borrowed rooms are fine for storage. They're terrible for accumulation.

Marriages deserve better than borrowed rooms.

M
You were right about waiting on the house. I'm glad we did.
I keep thinking about what you said in the car that night.
M
That we'd figure it out together? I meant every word of it.
Save this one. I don't want to lose it in the thread.
The conversations that matter most — buried three years deep in a group thread.
What Troth is

A room your marriage owns.

One place, built for two people — sealed for you and no one else.

Talk without borrowing. A private surface — Face ID locked, never on the camera roll.
Write down what you're building. Your values, promises, places, and people — in your own words.
Remember what matters. Letters, milestones, gratitude — kept where they won't get lost.
See the shape of the marriage. Your own timeline — the story the way it actually happened.
2019
On this day · 5 years ago
The apartment on Wells Street
Where the two of you started — one room, almost no furniture, certain of nothing except each other.

Nothing borrowed. Nothing buried. Everything the two of you keep, in one place.

The privacy promise

Sealed for two.

Honesty needs a place where it's safe. What you put in Troth never leaves your devices — no cloud, no AI, no company, including ours. Just two iPhones, end-to-end encrypted. Only the two of you can open the door.

How we're building this

In partnership with the couples on this list.

C
A note from Clark
Founder · married 23 years

Troth is the tool I wished existed for our own marriage — through good chapters and hard ones. The couples on this waitlist are shaping what we build.

We're opening access carefully, a few couples at a time — so the first ones are genuinely served by it. When you sign up, I'll write to you personally. Every reply gets read.

What the couples are writing
We're building a marriage where we say the true thing before it hardens.
A couple on the list · Year 4
Coming to iPhone in 2026

Keep your place.

The two of you can begin keeping your marriage in one place the day access opens.

We'll never share your address. Unsubscribe anytime.

Clark & Carrie

clark@jointroth.co