Ionic vs F-droid: What are the differences?
What is Ionic? A beautiful front-end framework for developing cross-platform apps with web technologies like Angular and React. Free and open source, Ionic offers a library of mobile and desktop-optimized HTML, CSS and JS components for building highly interactive apps. Use with Angular, React, Vue, or plain JavaScript.
What is F-droid? An installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. It is is a robot with a passion for Free and Open Source (FOSS) software on the Android platform. On this site you’ll find a repository of FOSS apps, along with an Android client to perform installations and updates, and news, reviews and other features covering all things Android and software-freedom related.
Ionic and F-droid can be categorized as "Cross-Platform Mobile Development" tools.
Ionic is an open source tool with 38.9K GitHub stars and 13.1K GitHub forks. Here's a link to Ionic's open source repository on GitHub.