Core, glow, spill
Three layers: a near-white hot core, a saturated halo, and a wide dim spill on the surface behind. Real neon has all three; most widget “glow” has one.
Neon
A neon sign is a tube of light with a soft halo bleeding onto whatever is behind it. Get the bleed wrong and you have a coloured font. These get the bleed right.
Three layers: a near-white hot core, a saturated halo, and a wide dim spill on the surface behind. Real neon has all three; most widget “glow” has one.
Three gases with genuinely different behaviour — pink bleeds furthest, green reads sharpest, azure sits coolest against a dark wallpaper.
These faces assume a dark background and lean into it. On an OLED iPhone the black is off, so the tube is the only thing drawing power.
Live previews
Live, and slightly humming.
Questions
Not really — glow needs darkness to read. Pair it with a dark or photographic wallpaper, or use the Bold or Editorial faces on light backgrounds.
Yes, the neon family ships in azure, green and pink, switchable without changing the layout.
Free on the App Store. iOS 16+. No account, no ads, no tracking.