One person.Whole apps.

I’m Timo Leisengang. I design, build, and ship apps across iOS, macOS, and the web, end to end.

See the work
Portrait of Timo Leisengang

TheAppStudio is a studio of one — Timo Leisengang. I take products from first sketch to release on iOS, macOS, and the web: interface, code, backend, launch. No handoffs, no middlemen. The person who designs your app is the person who builds it.

Everything between the idea and the app.

Native apps

Swift and SwiftUI on iOS and macOS, no wrappers. Apps that feel like Apple built them: fast, offline first, at home on the platform.

MacBook with an editor open on a bright studio desk

Web apps

TypeScript and Next.js when the product needs a browser: marketing sites, dashboards, and companion apps that share one backend.

Lines of code up close on a dark screen

Interface design

Design happens in code, on device, at real size. Screens get tuned by thumb, not approved in a slide deck.

Hand sketching app wireframes on an iPad with a pencil

Backends and sync

Auth, payments, push, and sync. The invisible plumbing that decides whether an app feels solid or flaky.

Dark server racks with glowing status lights

Launch

Screenshots, review notes, phased rollouts on the stores, quiet deploys on the web. I have shipped enough builds to know where launches bite.

Rocket lifting off from the launch pad in a cloud of smoke

Selected work

Orbital

The radial launcher for macOS. One click, and windows, apps, clipboard, and actions bloom around your cursor. One gesture replaces the whole Dock.

macOSSwiftAppKitSwiftUI

LocalWhispr

In development

Dictation that never leaves your Mac. Speak anywhere you can type — transcribed on device, instantly.

macOSSwiftWhisper
Coming soon

Actra

Screen recorder that edits itself. Auto-Zoom, Cursor-Smoothing, Motion Blur, Scenic Backgrounds.

macOSSwiftSwiftUI

Typemark

Native macOS PDF editor powered by a custom-built Swift PDF engine.

macOSSwiftSwiftUI
Typemark on macOS with a PDF open for editing

Liora

A native iOS wedding app that gives couples a digital hub for their special day, and their guests a way to engage before, during, and after it.

iOSSwiftSwiftUINext.js
Newlyweds kissing in a shower of petals, surrounded by guests

How I work

While your app is in the studio, it is the only thing in the studio. You always know what I am working on, because it is yours.

SwiftSwiftUITypeScriptNext.jsCloudKitPostgresFigmaXcode

Common questions

Who is Timo Leisengang?

Timo Leisengang is an independent software developer from Germany and the founder of TheAppStudio. He designs, builds, and ships native iOS and macOS apps as well as web apps — handling interface, code, backend, and launch himself.

What is TheAppStudio?

TheAppStudio is the one-person app studio of Timo Leisengang. It takes products from first sketch to release on iOS, macOS, and the web, with no handoffs and no middlemen: the person who designs the app is the person who builds it.

What apps has Timo Leisengang built?

Selected work includes Orbital, a radial launcher for macOS that puts windows, apps, and clipboard around your cursor; Actra, a macOS screen recorder that edits itself; Typemark, a native macOS PDF editor powered by a custom Swift PDF engine; and Liora, a native iOS wedding app. LocalWhispr, on-device dictation for macOS, is in development.

How can I work with Timo Leisengang?

Email timo@theappstudio.net and describe the app you want to build. TheAppStudio takes on one project at a time, and every message is read by Timo himself.

Have an app in mind?

Tell me what you want to build. I read every message myself. I’m also currently open for collaborations.

Contact