Marlin is sold as a perpetual, single one-time purchase with no subscriptions or maintenance fees.
The Standalone Settings Window (⌘,)
Settings is ⌘,. The panes are General, Appearance, Editor, Languages, Search, Keys, Privacy, and Assistant. The window footer reads Private local workspace.
Editor, Themes & Thresholds
Editor lists every fixed-pitch family installed on this Mac. The sample shot is System Monospaced at 12.5 pt, with line height 1.45. Ligatures render arrows and inequality signs as single glyphs in faces that carry them. Appearance is switched with ⌃⌥T.
Perpetual License ($19.99)
Marlin costs $19.99 paid once. Direct purchases from store.sixtwelve.studio provide a cryptographic P-256 license key covering both macOS and Linux. Mac App Store purchases are entitled directly by Apple receipt validation.