Credits & licenses

Last updated: October 9, 2026

SiamKeys is made possible by the following people, services and open-source projects. Thank you.

Fonts

• Sarabun – Copyright 2018 The Sarabun Project Authors (github.com/cadsondemak/Sarabun).
• Noto Sans Thai – Copyright 2022 The Noto Project Authors (github.com/notofonts/thai).

Both fonts are licensed under the SIL Open Font License, Version 1.1. The license text is available at openfontlicense.org.

Artwork

Most illustrations in the app and on this site (flashcards, cats, medals and trophy) were created with AI image-generation tools and edited by us.

Audio

Thai and English pronunciations were generated with Google Text-to-Speech. Sound effects, ambient sounds (rain, brown noise, stream) and the menu music were synthesized by us.

Exchange rates

Rates by Exchange Rate API and Frankfurter (European Central Bank reference data). Rates are market mid-rates for information only; exchange booths and banks differ.

Software and services

• Built with Flet and Flutter (open-source, Apache 2.0 / BSD-3-Clause), and other open-source packages under their own licences.
• Sign-in, progress sync and rankings run on Supabase.
• Ads on mobile are served by Google AdMob. The Thai Note translate button uses Google Translate, with MyMemory (Translated) as a backup.

Trademarks

Google, Google Translate, Gemini, AdMob and Google Play are trademarks of Google LLC. SiamKeys is not affiliated with or endorsed by Google or any other company named here.

Contact

Questions about licensing or credits: playsiamkeys@gmail.com