Open-Source Licenses & Attributions

coil — kinetic speed reader

coil is built with open-source software and public-domain content. We're grateful to the projects and communities below.

Software libraries

Project	Author / Owner	License
React & React DOM	Meta Platforms, Inc.	MIT
Vite	VoidZero Inc. & Vite contributors	MIT
Capacitor	Ionic (OutSystems)	MIT
PDF.js (pdfjs-dist)	Mozilla Foundation	Apache-2.0
JSZip	Stuart Knightley et al.	MIT
sentiment (incl. the AFINN-165 word list by Finn Årup Nielsen)	Andrew Sliwinski et al.	MIT
cordova-plugin-purchase	Jean-Christophe Hoelt / Fovea	MIT
vite-plugin-pwa & Workbox	Anthony Fu / Google LLC	MIT
@capacitor-community/keep-awake	Capacitor Community	MIT
@capacitor-community/text-to-speech	Capacitor Community	MIT
@capacitor/android & @capacitor/app	Ionic (OutSystems)	MIT
@capacitor/haptics	Ionic (OutSystems)	MIT

Typefaces

Merriweather, Playfair Display, Inter, Outfit, Fredoka, Heebo, and Vazirmatn are bundled with the app under the SIL Open Font License 1.1 (packaged via the Fontsource project, MIT). Heebo and Vazirmatn are used for Hebrew and Farsi/Arabic text.

Dictionary data

Online definitions are provided by the Free Dictionary API, whose data is sourced from Wiktionary (Creative Commons BY-SA).
The bundled offline dictionary is derived from Webster's Unabridged Dictionary (1913 edition), which is in the public domain.

Book texts

The classic literature available in coil consists of works in the public domain in the United States, sourced from Project Gutenberg. "Project Gutenberg" is a registered trademark of the Project Gutenberg Literary Archive Foundation. coil is not affiliated with, sponsored by, or endorsed by the Foundation. Public-domain texts are distributed here without Project Gutenberg's license header, as permitted when the trademark is not used to sell the texts.

Services

Free Dictionary API — word definitions.
corsproxy.io, api.codetabs.com and api.allorigins.win — cross-origin relays for the browser version.
gutendex.com — the catalogue index behind book search and browsing.
MyMemory Translation API (Translated S.r.l.) — fallback in-app translation on platforms without Chrome's on-device Translator API (Android, iOS, Safari, Firefox).