Overlays

Themes you can drop in.

Live preview each overlay below, then download the .nerva-overlay bundle and import it from the desktop app.

Available overlays

Default

Clean, minimal, dark. The Nerva reference theme. Live BPM, status, optional stress meter.

Bundled with the desktop app, no separate download.
Cortisol meter

Classic infographic-style cortisol gauge: 6-segment half-dial with a swinging black needle driven by stress, BPM readout below.

Download Cortisol meter
Cortisol meter (clear)

Cortisol meter without the white card. Dial and BPM readout straight on transparent, to drop over gameplay without a visible frame.

Download Cortisol meter (clear)
Tunnel vision

Full-screen stress effect: peripheral darkening, backdrop blur, and radial speed lines breathing at heart-rate tempo. Invisible at rest, intense above 70.

Download Tunnel vision

More themes coming. A public marketplace is on the table, no date yet.

Skin, Brand, Signature. Three tiers, quote-based, weekday turnaround.