ReadThai.Fun is described as 'Free, research-backed Thai learning web app focused on mastering the Thai script. Features include spaced repetition with Kornell & Bjork interleaving, tier-gated progression through all 44 consonants and 32 vowels (ordered by real-world frequency), OCR' and is an website in the education & reference category. There are five alternatives to ReadThai.Fun, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad and Android Tablet apps. The best ReadThai.Fun alternative is Anki, which is both free and Open Source. Other great sites and apps similar to ReadThai.Fun are Duolingo, Memrise, Drops and Ling.