The KaiOS ecosystem, packaged and hosted apps, and the KaiStore and JioStore. KaiOS App Basics KaiOS Apps (Source: 2020’s most popular KaiOS apps) Unlike Android and iOS, “native” KaiOS apps are just modified web apps. That means no new programming languages to learn or complicated build processes, just standard HTML, CSS, and JavaScript. That means you can also write in TypeScript or any JavaScript version or language the compiles or transpiles into ECMAScript 2015 (ES6) and runs on Fi...