Light is a claim.
Here is the reading.

Linelark is meant to live in the Dock and remain open through the day. This is the first public snapshot from a real long-running session—not a best-case laboratory number.

Physical footprint≈70MBObserved after 2 h 34 min

A working session,
not an empty launch.

Recorded 26 August 2026. The app had already been running for 2 h 34 min. Memory varies with files, panes, syntax state, plugins, and live terminals.

macOS physical footprint70.3 MB

The footprint command’s current physical-footprint value.

Activity Monitor69.9 MB

The visible Memory-column reading supplied with the same session.

Peak footprint106.7 MB

The session’s peak—not its steady observed value.

Session age2 h 34 min

Long enough to represent the “leave it open” use case.

Release
Studio 1.0
Machine
Apple M5 Pro · 24 GB
System
macOS 26.5.2
Artifact
4.9 MB universal DMG

Reproducible,
with the caveat attached.

The screenshot was read in Activity Monitor’s Memory tab. The same running process was then checked with Apple’s command-line footprint tool, which reported 70.3 MB current and 106.7 MB peak physical footprint.

pid=$(pgrep -x Linelark)
footprint "$pid"

This is an observed creator session, not a controlled comparison against another editor. It does not establish cold-start time, energy use, or a universal memory ceiling. Those require a repeatable workload and will be added only after that protocol exists.

The app brings an editor,
not a browser engine.

SwiftUI + AppKit

Native controls, windows, menus, and text infrastructure.

On-demand folder work

No continuous project indexer running simply because a folder is open.

One process at rest

Terminals and plugin work appear when the workflow asks for them.

4.9 MB to download.
Ready to stay open.

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