We build small, focused software for Apple platforms.

Zentsu LLC is a software studio working on native tools and apps for macOS and iOS. We favor offline-first design, one-time purchases over subscriptions, and shipping software that does a clear job without asking for an account.

Apps

Bench app icon

Bench

Coming soon · macOS · Submitted to Mac App Store

A native macOS developer toolbox in one offline window: JSON, JWT, regex, hashes, UUIDs, video conversion, and more.

$14.99 Pro unlock
Coil app icon

Coil

Coming soon · iOS · macOS

Track every subscription in one place. It runs on your device and never links to your bank.

$14.99 one-time

How we build

  • Native first

    Mac and iOS apps written in Swift and SwiftUI, not cross-platform shells wrapped around a web view.

  • Offline by default

    Tools that work without an account, without telemetry, and without a server round-trip. What you type stays on your device.

  • Pay once

    One-time purchases over subscriptions, where the model fits. The version you bought keeps working.

Contact

For press, partnerships, or general inquiries: [email protected].