We craft native, focused utility applications for macOS.
No subscriptions, no account registration, and no tracking. Just tools that work.

RepLog

RepLog

A clean, focused practice tracker for musicians. Log your sessions, set speed goals with BPM targets, check your weekly consistency calendar, and use the built-in chromatic tuner and metronome. Your logs stay on your device.

SeamDiff

SeamDiff

A distraction-free, native side-by-side file and folder diff viewer. Powered by the Monaco Editor engine, it brings syntax highlighting for 80+ languages, folder tree navigation, and Git history comparison directly to your desktop.

Offline & Native

Our apps are compiled natively for macOS. We don't wrap slow web browsers or collect telemetry to analyze your behavior. Everything runs offline, storing data locally on your computer.

Our Ethos

We believe software should respect the user. That means building applications that load instantly, do one job perfectly, and never try to lock you into a subscription loop.

Native Speed

Built using native macOS frameworks. Fast startup, low memory footprint, and perfect integration with system-wide behaviors.

No Telemetry

We don't track what you compare or log. We collect zero analytical data, zero crash reports, and zero remote logs.

Direct Ownership

Our apps are one-time purchases. Once you buy a license, you own it. No recurring charges or surprise updates.

Focused Utility

We design each tool around a single problem. We avoid creeping bloat and half-baked features.

Offline First

Our apps run entirely on your local machine. No remote server connectivity required to perform standard actions.

No User Accounts

No signup flows, no email verification, and no password managers needed. Just download the app and start using it.

Get in touch

Have questions about SeamDiff or RepLog? Found a bug, or have a suggestion for an improvement? Let us know.