# Fonts

The app brings its fonts with it and never fetches any: text looks the same on
every device, whatever fonts it has. Noto Sans, its font, comes with halkyon_ui
(`packages/halkyon_ui`), which bundles it with its licence and registers it; the fonts
for Japanese, Chinese and Korean are the app's own, here.

| File | Font | Source | Licence |
|---|---|---|---|
| `NotoSansJP-Variable.otf`, `NotoSansSC-Variable.otf`, `NotoSansTC-Variable.otf`, `NotoSansKR-Variable.otf` | Noto Sans JP, SC, TC, KR (Japanese, Simplified and Traditional Chinese, Korean), every weight | [notofonts/noto-cjk](https://github.com/notofonts/noto-cjk) `Sans/Variable/OTF/Subset/NotoSans{JP,SC,TC,KR}-VF.otf`, commit f8d157532fbf (2026-10-08) | SIL Open Font License 1.1, `OFL-NotoSansCJK.txt` |

Noto Sans is the app's font; the CJK fonts fill in the glyphs it lacks, the
one matching a studyset's language first, Japanese otherwise (halkyon_ui's
`appFontFallbackFor`, which names them by the families `pubspec.yaml`
declares): they share most Han characters but draw them differently. Noto Sans JP alone would not do as the app's font: it has
no accented or polytonic Greek. Scripts none of them covers (Arabic, Hebrew,
Thai, Devanagari, …) come from the device's own fonts. The files are renamed
only; their glyphs are unchanged. The licences are shown in the app's licence
list.