House of Cairn

An app studio for phones that fold, and phones that don't

Small apps, stacked with care.

We make native apps for iPhone, iPad and Android. Each one does one job well, keeps your data on your phone, and is designed for foldables from the first sketch.

iOS 27 iPadOS 27 Android 17 iPhone Duo Pixel Fold Galaxy Z Fold

Tap a stone.

On the trail

What we're making

Linecheck

Is it your Wi-Fi, your router or your provider? One tap tells you, in plain words. Leave it watching, and it keeps a record you can send your provider when the speed you pay for isn't the speed you get.

In the works

Cuecard

Film yourself with your foldable's best cameras and read your script on the cover screen. Or film someone else, and give them their next line where they can see it.

In the works

How we build

Three things every app gets

Native on each platform

SwiftUI on iPhone and iPad, Jetpack Compose on Android. Each app moves, sounds and navigates the way your phone expects, and the features match on both.

Ready for foldables

Folded, open and everything in between. The open screen gets a layout made for it, and nothing you were doing is lost when you fold or unfold.

Private by default

No tracking, no ads that follow you, no account unless an app truly needs one. What you put in stays on your phone.

Cuiridh mi clach air do chàrn.

“I'll add a stone to your cairn.” A Scottish Gaelic blessing.

Why a cairn

A cairn is a pile of stones that marks a trail for whoever comes next. Each traveller who passes adds one.

That's how we work. Every app we finish is another stone, and each one carries what the last taught us.

Say hello

Questions, ideas, bug reports

hello@houseofcairn.app